The next six months in WordPress development are going to be pretty exciting considering the possible scope of 3.0, a new default theme and of course, the merge of WordPress MU into the codebase of WordPress. Anyone who has been keeping an eye on trac may have noticed that the merging process has already begun.

More at: http://weblogtoolscollection.com/archives/2010/01/07/the-merge-has-begun/