Mer seems to be gathering a little steam. The Spark tablet project is also planned to use it.
http://aseigo.blogspot.com.au/.....swers.html
An ARM based distro that runs on multiple small devices is could build quite a bit of momentum. I am planning to get a Spark for a different but complementary project to my raspberry pi plans. My N900 is waiting on a Mer install too.
T
Read more http://www.raspberrypi.org/forum/distributions/meego-mer-on-raspberry-pi/#p38645