The Nokia N900 has received a new firmware in the form of PR 1.1.1 (version 3.2010.02-8). This looks like a minor update and is available as an image from N900 firmware section as well as over the air if you search for updates. The OTA option is a 16.2 MB download and looks like a precursor to the major PR 1.2 update.
This update adds a number of regions to the N900, as quite a number of countries were earlier missing from the N900’s list. Apart from that there is no changelog available. I will update this post if I see something new.
The changelog is now available here, this firmware fixes the battery drain issue when connected to WIFI and browser improvements among other minor things.
Update: If you get a memory error while trying to update the N900 over the air, trying rebooting the device once. If that still doesn’t solve your problem then disable the Extras-Devel and Extras-Testing repositories and try again.
Update 2: The update is also available via the Nokia Software Updater, however when you update using it, you will loose your applications and settings, while the contacts and other data including photos will remain intact. So please make sure you backup before you update.