I haven't seen official announcements made yet, but the latest OS2008 images can be found from these links:

Link to N810 download

Link to N800 download

Hopefully I don't get into trouble posting these... but hey, these links are publicly accessible and anybody could have figured these out after trying enough combinations...

Enjoy!

EDIT: Since the links aren't yet active, I removed them here from causing any further confusion. Will post back once they become active again.

EDIT2: The files are now online. Links have been updated, but only to serial number verification screen. This is because the serial number has to be validated once before the file can be downloaded anyway...