The Nokia N900 received a minor update on Monday to prepare for the major update released just now. The Maemo team is calling the update Maemo 5 PR1.1, but the version number is 2.2009.51-1. Nokia has provided the official changelog and wow it is long!
I was planning on just copying and paste the changelog here, but you’ll be overwhelmed. Read the Maemo 5 PR1.1 changelog.
The update is available through the application manager on the Nokia N900, so go check if it’s available for you. I’ll report back my thoughts after spending some time with the new firmware.