The MeeGo operating system has just been updated to version 1.1. The interesting part of the update is a feature (available for the Nokia N900) called U-Boot.
U-Boot enables support for dual booting between MeeGo and Maemo. It has not taken very long for this to be tested. A video has been released showing the Nokia N900 dual booting between the two operating systems.
It is still a complex process that requires some kernel editing and a microSD card. Once further work has been done, it should be straightforward. Install a few packages, write the MeeGo file system images to a microSD card and start up the phone.
The video below should whet your appetite while the work is done to make it a much easier process.