The original clix was no slouch in the looks department, but the new clix gen 2 is thinner, sleeker, and even more stylish than its predecessor. (Though the funny thing is that it's not quite as skinny as it looks. Turns out that the clix gen 2 is only slightly -- 16mm vs. 13.2mm -- thinner than the original clix, it just seems that way because of how it's designed.)
Anyway, besides being thinner and better-looking than the first clix, they've replaced that proprietary connector with a standard a mini USB port, swapped in a somewhat brighter AMOLED display, and added WMV and MPEG-4 SP up to 30fps (the original could only handle 15fps) to the list of supported codecs (both the original and the gen 2 can handle MP3, WMA, and OGG). One thing they didn't change is the clix's intuitive D-Click navigation and user interface. There are still no buttons on the face of the player, you just click the edge of the clix in the direction you want to go.
Click on (no pun intended) for the pics!