The WB650 and WB600's headline features are the massive 15x optical zoom. They're both high-end models with 24mm wide-angle Schneider Kreuznach lenses, 12.2-megapixel sensors and both optical and digital image stabilization features.
The WB650 has a 3-inch AMOLED display and GPS, whereas the WB600 just has a regular 3-inch TFT display. Both can record 720p HD video at 30fps, along with HDMI capability.
In hand and it's pretty big with the zoom clearly having to fit somewhere - this isn't going to fit in your pocket.
Other interesting features we found playing with the camera at the UK launch included a fish-eye and vintage artistic setting and the ability to apply those settings to the video footage you record as well.
According to the "demo guy" we spoke to, running GPS will take about a third off your battery life giving you on average 200 shots on a full charge over the usual 300.
Expect to be zooming in to the action shortly.