“Improved image processing produces the most impressive high ISO JPEG performance we have seen in any Micro Four Thirds offering […] Chroma noise is well-suppressed and an impressive amount of image detail can be seen as high as ISO 6400.”
DPReview has published their review of the Panasonic GX1, a Micro Four-Thirds Interchangeable Lens Camera (ILC, or “compact mirrorless DSLR”) with 16MP resolution (on a 17.3 x 13.0 mm Live MOS Sensor), Shutter Speed range of 1/4,000 – 60 and Bulb, Continuous Shooting 4.2fps (20fps at 4MP), iA, PASM, Scene Mode, 3.0-in. (460k-dot) Touch Panel LCD, ISO 160-12800, Electronic Level Gauge, Built-in Flash, and Full HD Movie 1,920 x 1,080/60i at 30fps with stereo sound. You can attach an optional 1,440,000-dot equivalent tiltable Live View Finder (LVF) DMW-LVF2 (purchase separately).
You can read the Panasonic GX1 Review @ DPReview.