The long awaited release of 188.8.131.52 is now available, but only from OTN, not edelivery. The links can be found here.
The edelivery release should be coming soon along with documentation. Right now there is no documentation, but there are apparent changes about certain platforms being dropped (Windows XP, Vista, Windows 2003 Server, IE7, IE8, etc.). Once I get an environment going I'll be looking at specific changes to HFM and associated modules.