Digital Photography Review reports: [edited]
The LX7 features a slightly smaller sensor than the LX5, allowing it to offer the brightest lens of any compact camera with a F1.4-2.3 24-90mm equivalent range.
The LX7 is based around a 10.1MP MOS sensor, rather than its predecessor's CCD, allowing it to offer 10 fps continuous shooting and 1080p60 movies (50p for European examples) in AVCHD Progressive format, or half that rate in MP4.
It also gains an aperture ring around the lens, a 920k dot LCD, and finds room for stereo mics and a larger accessory port, allowing use with an optional high-res electronic viewfinder.
Hands-on preview available here