Samsung NX10

• Launched: January 2010
• Type: SLR style hybrid
• Sensor size: APS-C 
• Resolution: 14.6 megapixels
• Lenses: Samsung NX/i-Function
• Key features: None
• Links: Press release | Product page

Summary: The NX10 was the first SLR style hybrid to use an APS-C sized sensor. It's a good camera for both beginners and enthusiasts, and it's no larger than a Micro Four Thirds hybrid. It's been updated replaced by the NX11.

Ricoh GXR

• Launched: January 2010
• Type: Compact style hybrid
• Sensor size: APS-C or 1/1.7-inch
• Resolution: 10-12.3 megapixels
• Lenses: Ricoh GXR system
• Key features: Interchangeable camera-lens units
• Links: Press release | Product page

Summary: Unique hybrid camera where you change whole lens-sensor units rather than just the lens. It's inefficient in that each unit costs more, but allows sensor/lens pairings optimised for different kinds of photography. Designed for enthusiasts and pros.

Sony Alpha a450

• Launched: January 2010
• Type: Digital SLR
• Sensor size: APS-C 23.4 x 15.6mm
• Resolution: 14.2 megapixels
• Lenses: Sony a mount
• Key features: 7fps continuous shooting, in-built anti-shake, HDR mode
• Links: Press release, Product page

Summary: Intermediate-level D-SLR that fits between the low-cost a290/390 and the a500/550, but in fact it beats the a500/550's specs with 7fps continuous shooting, a high-capacity battery  and one of Sony's new14-megapixel CMOS sensors.