https://github.com/monero-project/bitmonero/releases/tag/v0.9.2
What do I need to do to upgrade from v0.9.1? Delete everything and start from scratch, or can I save the blockchain (was a bitch to sync with my spotty connection). Or should I wait until next week?
EDIT:
downloaded windows version, unzipped to a new location. Copied wallet and keys files over from old folder, and simplewallet seems fine with that. started daemon, and it seems to have found the database without issue (where the hell did windows put it?), as it synced immediately. Can I delete the 0.9.1 folder completely?
You could have just just unzipped it to the folder you had 0.9.1 in. It will write over the necessary files.
"(where the hell did windows put it?)" It usually defaults to downloads but you can select "browse" and place it anywhere you want, again where you had the version you are updating from.
In Windows the place is... C:\ProgramData\bitmonero