You heard it here first, Amazon has just launched the Canon 1D Mark IV for preorder! Slated with a price of $4,999.99 and the following technical specifications:

• 16.1-megapixel APS-H CMOS sensor and Dual DIGIC 4 imaging processors
• 45-point Area AF sensor including 39 cross-type AF points with f/2.8 support
• ISO 100-12,800 for shooting from bright to dim light with low noise levels
• EOS HD movie with manual exposure control and multiple frame rates; 3.0-inch Clear View II LCD monitor
• Magnesium alloy body with shutter durability up to 300,000 cycles and exclusive dust-and-weather resistance
• Body only, lenses sold separately; capture images to CF Card Type I and II, SD/SDHC (not included)

Grab your preorder now to ensure your place in line. If you would like to know when the 1D Mark IV comes in stock, sign up for our FREE alerts and we will email you right away. Learn more over at our Canon 1D Mark IV Tracker.

Learn more about the Canon 1D Mark IV specs from the official press release.

UPDATE: B&H has launched their product page for the 1D Mark IV and it has been added to the tracker. No preorders available yet, but the tracker will pick it up and notify as soon as they are available. Sign up for free in stock and/or preorder alerts to be notified.

Just announced by Nikon, the new Nikon D3S professional DSLR extends the widely acclaimed D3 extending the low light photography performance. With a redesigned 12.1 MP  image sensor, newly modified inner structure, and a seven stop ISO range of 200-12,800, the D3S is able to capture images in extreme light conditions.

If you would like to preorder the Nikon D3S now, head over to Amazon.com. Otherwise, sign up for our FREE alerts and we will send you in stock or preorder alerts from a variety of stores we track. Or if you choose, download our Desktop Alerts application and receive alerts right on your computer’s desktop. Either way, just register for a FREE account and add the Nikon D3S alerts. To learn more, head to our Nikon D3S In Stock Tracker.

UPDATE: 10-14-2009 1:40 PM EST

Preorders for the D3S are now available at Adorama. See tracker for more details.

UPDATE: 10-14-2009 11:25 PM EST

Added the UK Nikon D3S Tracker.

If you are in the UK and looking for the same two hot products in the US, but in the UK, then you are in luck. NowInStock.net recently launched the Canon 7D UK Tracker and the Zhu Zhu (Go Go) Pets UK Tracker. Both of these trackers are sure to aid you finding both of these hot products in stock.

Just sign up for a FREE account and add the items you want notified on. Also, be sure to check out the recently launched NowInStock.net Desktop Alerts application for even faster alert delivery via a small desktop application running on the Adobe Air platform.

Will Zhu Zhu Pets be the hottest item of the upcoming holiday season? These fury little robotic hamsters have taken test markets by storm and are already commanding exorbitant prices on Amazon via 3rd-party resellers. Stock has yet to fully hit the shelves at the major retailers yet, but what was distributed to the Phoenix, Arizona areas earlier this summer as a test market proved that the product was clearly in high demand with inventories flying off the shelves. Hamsters are great pets for pre-teens, but you know who ends up cleaning and taking care of the cage. Zhu Zhu Pets require little maintenance.

NowInStock.net has already begun prepping for the holiday season by opening the Zhu Zhu Pets Tracker. This product tracker monitors the availability of Zhu Zhu Pets and their accessories. As soon as product comes in stock for purchase at any one of the online stores we track, we will send you an email, desktop alert, or update our RSS Feed. You select only the items you want to be alerted on. The best part is the service is absolutely FREE!

Currently we are only tracking Amazon and Toys R Us, but will be adding WalMart, Target, and or Meijers as soon as inventory begins to hit these online stores.

Added two new cameras to the their respective trackers:

The new Panasonic GF1 takes its place as the third model in the revolutionary G series of digital interchangeable lens system cameras based on the Micro Four Thirds system standard. The GF1 is located within the Panasonic In Stock Tracker, so sign up for the FREE alerts if you are interested in knowing as soon as the GF1 arrives in stock.

The second camera just added is the recently announced full-frame sensor Leica M9, “the world’s first digital rangefinder camera with a full-frame 24 x 36mm sensor.” The M9 is located in the Leica Camera Tracker.

Last night, I launched the Canon 7D in stock tracker, the new camera recently announced. Currently we are tracking a variety of stores including Amazon, B&H, Adorama, J&R, and OneCall. There are two versions to this new camera, the first is just the Body, the second is a Lens Kit Combo which comes with the 7D Body along with the 28-135mm lens. The Body retails for $1700 and the Lens Kit Combo goes for $1900.

Sign up for the FREE email alerts to know as soon as stock becomes available or your favorite store begins taking preorders. Or for even quicker alerts try out the new Desktop Alerts. Find out more at our Canon 7D Tracker.

NowInStock.net has just launched their latest in stock alert option by introducing Desktop Alerts. Implemented via the Abode© AIR™ runtime, Desktop Alerts resides on a trusted desktop platform across multiple operating systems, including Microsoft Windows, Mac OS X, and Linux.

The Desktop Alerts application allows users more immediate access to near-real-time inventory data which is continuously updated via the proven spiders of NowInStock.net. Desktop Alerts provides users with an alternative in which to bypass email alerts which can have a tendency of being delayed by either ISPs or email services.

At launch, all items tracked by NowInStock.net are able to be tracked via Desktop Alerts. Please provide comments or bug reports during this BETA test via our contact form. For more information on Desktop Alerts and installing the application, please refer to the Desktop Alerts page.

Apparently the 5D Mark II 24-105mm lens kit is discontinued according to B&H. The product page states:

• Important Notice!
• This item has been discontinued and is no longer available. Please call for more information.

Which apparently means there is more than likely going to be a new kit on the horizon real soon. Maybe even one with a lens that is equipped with new Hybrid IS.

If you are still looking for the 5D Mark II 24-105mm lens kit, you may be able to snag one from Adorama if you hurry.

UPDATE: 8/13

Well it appears the 5D came out of Discontinued status a day after my post. The unit is in stock right now:

Is the Canon 70-200mm f/2.8L IS lens being discontinued? Maybe. With the recent announcement of the new image stabilization from Canon being referred to as Hybrid IS (read more) which now compensates for angle shake along with the traditional shift camera shake (perpendicular), it seems quite likely the 70-200mm 2.8L IS will be upgraded soon.

Being one of, if not the most popular advanced lens of Canon camera line, it makes sense that the 70-200mm 2.8L IS would be one of the first candidates to get the overhaul.

However, if you are still looking for the 70-200mm f/2.8L IS lens, then head over to our Canon Camera Tracker to see where current stock is available or head to B&H Photo who has stock available as of the writing of this post.

As per a recent user request, I have added the hard-to-find Leica D-Lux 4 to NowInStock.net. This camera can be found in the newly added Leica Camera Tracker. I have also added the soon-to-release Leica D-Lux 4 Safari Edition for those of you eager to know as soon as this camera is released.

If you are one of the ones looking for this elusive camera and keep on coming up short, sign up for the FREE in stock alerts and when our spiders find stock available, we will notify you right away. No need to peruse the web daily searching for the Leica D-Lux 4, let NowInStock.net do the work for you! Good luck to all who sign up; NowInStock.net will have your back.