1. One of my games 'save numbering' went berserk (save game # 43792? seems to come to mind, I know it was 43xxx followed by save game 000...). 3 others didn't, so probably just a mild case of save-itus. Still, worth noting. (If only because the last number save before rollover isn't binary in origin) Deleting back a few saves didn't help. Had to re-start whole game. Something in the saves (all of them) as I couldn't make a new game and use the old saves. Oh well, I'm sure we've all had corrupted saves before...
2. Butterflies are harder to 'grab'. I clicked on one today, (over head) and it didn't get caught, but it didn't move away from crosshairs, either. It just stayed 'caught' on my crosshairs while I madly clicked on it until it finally got 'caught'. Noises each time I clicked, just no capture. Happened several different times, different places, different games. Also seems to be more butterflies available. (Maybe I just notice them more, as I'm having issues capturing them.)
3. Opening books animation seems to have the 'spinning' effect much more often. And it seems that more times now there is no 'instant' close, so you have to see the closing anim. more often. Including 'spinning' close...
I have tested the book and butterfly scenarios on same character, same place, different patch (1.6 vs 1.7), and there is a noticeable difference. And I'd call the butterfly capture issue a 'bug'.