WordPress MU version 2.9.1 has been released to the public. This means that features such as the trash can, image editor, and bulk plugin upgrades can be used in WordPressMU. Before you upgrade though, be sure to read this IMPORTANT post regarding adding the commentmeta table to your install.
However, I can’t help but wonder if for Donncha this release is bittersweet as barring any security problems, this is most likely the last release of the software known for a few years as WordPress MU. The merge has already started and should be completed by the time WordPress 3.0 rolls around. From that point forward, the MU features will be known as Multi-Site in WordPress. Donncha ends the release post with the following:
Thank you to everyone who has helped make WordPress MU better over the years, either by helping on the forums, writing plugins, contributing code, working on Trac tickets or any of the other hundred and one other things that go into an open source project.
I’m guessing that Donncha will continue to play an active role on the Multi-Site capabilities of WordPress but he’ll have to let us know for sure. Congrats Donncha for sticking it out for as long as you did. I hope this merge provides you with a renewed sense of energy to continue development.
Figures. Soon after this post was published, Donncha released WordPress 184.108.40.206 which can be found here. This release contains some important bug fixes, including a bug in the installer that has existed for quite some time.