Nikon made its D3X digital SLR (DSLR) camera, the successor of the D3, official,. The D3X is Nikon’s high-end flagship DSLR camera. It features a 24.5 Megapixel CMOS FX format image sensor, ISO sensitivity from 1000 to 1600 (expandable to 50-6400), and Nikon’s newly enhanced EXPEED Image Processing System. It can do full resolution at up to 5fps.

Olympus adds the new E-30 digital SLR camera to its E-System lineup. The E-30 sits between the E-520 and the E-3. It offers the same high imaging …

Sony Alpha DSLR-A900 is the company’s latest full-frame digital SLR camera. It features a 24.6 Megapixel 35mm Full Frame CMOS image sensor, ISO from 100 to 6400, High Speed Dual BIONZ image processor, and a 3-inch LCD display. It supports direct HDMI output. The Alpha A900 uses CompactFlash and Memory Stick cards.

Sony Alpha DSLR-A900 has been reviewed by DPReview:
In conclusion this is, more than anything else at this end of the market, a true photographer’s camera, with at least one totally unique feature (the Super SteadyShot stabilization) and one that offers the best viewfinder and highest nominal resolution (and the lowest ‘cost per megapixel, incidentally) in its class.

Canon’s EOS 50D is the company’s latest Digital SLR camera. 50D features a 15.1-megapixel CMOS APS-C size image sensor, DIGIC 4 image processor, 12800 ISO, Live View, Face Detection and a 3-inch Clear View LCD screen.

PhotographyBLOG and CNET has reviewed the EOS 50D DSLR:

Other than the compact DP2, Sigma offers also the new SD15 DSLR camera. Like the DP2, the Sigma SD15 packs the 14 Megapixel FOVEON X3 direct image sensor, and the same True II image processor. …

Sigma introduces the new DP2 compact digital SLR camera, replacing the DP1. The Sigma DP2 features a 14 Megapixel FOVEON X3 direct image sensor (2,652 × 1,768 × 3 layers), the TRUE II image processor, …

Pentax presents the new K2000 (aka K-m in Europe) digital SLR camera. The Pentax K2000 features a 10.2 Megapixel CCD sensor, ISO up to 3200, Shake Reduction system, Advanced Auto Picture mode and a 2.7-inch LCD display.

The Pentax K2000 system comes …

Leica introduces the new S-System and the first camera of the S-System, the S2 professional DSLR. The Leica S2 features a 37 Megapixel 30×45mm image sensor, which is 56% larger than those used in 35mm full-frame DSLRs.

Other than the S2 camera, …

Canon officially announced the EOS 5D Mark II Digital SLR camera.The EOS 5D Mark II features a 21.1-megapixel full frame 24 x 36mm CMOS sensor, and Canon’s DIGIC 4 imge processor.

The new EOS 5D Mark II Digital SLR features an ISO …

Panasonic announced its new Lumix DMC-G1 that is the world’s first Micro Four Thirds system camera, which is the world’s smallest and lightest digital interchangeable lens camera, weighing in at 385 grams and Based on the Micro Four Thirds System, the Lumix G1 has no internal mirror like other DSLR cameras.

The Lumix G1 is also the world’s first interchangeable lens camera that will come with color variety, black, blue and red models.