http://www8.garmin.com/manuals/webhelp/forerunner235/EN-US/index.html
It's worth a read - there are a few interesting things within. Most notably, check "Appendix -> Data Fields". Darn near 50 of 'em! I'm thankful to see "Lap Cadence" is back, as real-time fluctuates way too much.
Oh yeah, and "Backlight Settings - Wrist Turn: Allows your device to turn on the backlight automatically when you rotate your wrist toward your body."
Sweet! Looks like Garmin put their A-team on this watch, unlike its predecessor...