There is a new update for the Nokia N900 dubbed PR 1.3, but you’ll see it in the device as version 20.2010.36-2. The update adds support for PC Ovi Suite to access and sync files and messages between your Nokia N900 and desktop. There are also tweaks and fixes that should make the Nokia N900 perform better. The OTA update wasn’t available for me, but Nokia Software Update via PC worked fine.
The PR 1.3 update is about 200MB. I don’t notice major changes so far, but I’ll update this post if a changelog pops up. On the backend, the Maemo team mentioned on their blog that this update aligns the Qt application and UI framework with the planned version for the MeeGo 1.1 platform (Wt 4.7). It includes Qt Mobility 1.0.2 APIs too. Make sure to read their post if you’re a developer.