we're finally getting around to merge all the awesome stuff that has been isolated in the gsoc-branches. while most of it won't make it into the next release already, it will be available through the silverstripe-trunk for sapphire/cms/jsparty.
based on the method on which we're merging (granular merge author-by-author),
trunk will be unstable (or at least inconsistent) for a couple of days.
if you've been checking out anything from svn://svn.silverstripe.com/silverstripe/open,
make sure you're using the 2.1.0 branches instead of trunk.
the phpinstaller mentioned on the download-page is already switched to 2.1.0 - you can update your working copy by using "svn update ." in the root-directory.
note: when referring to "2.1.0", we're meaning a codebase that will eventually form the release candidates for the 2.1.0 release - it's not fully there yet ;)