Poker Notes 0.9.5 is now available. The feature I'm most excited about is this:
In a nutshell, recently played hands show up in the toolbar. Clicking on one of them will pop up a small window with a history of the hand and a space for taking notes. I love this. The screen footprint is tiny, but it still makes it a snap to answer, "Wait. How did JimmyJoeBob just play that hand?"
Full Tilt, Poker Stars, Party Poker, Ultimate Bet, Absolute Poker, Pacific Poker, and the OnGame Poker Network are all supported.
Also, despite my earlier claims, I did manage to find a way to allow upgrades without requiring a reboot. Huzzah!