I can only presume that Microsoft will release an RTM that probably has less features than the PGP (Pleb Guineau Pig) version..
ie you get to test the Enterprise Version and they get the cut down Home Version that doesn't have the advanced, difficult to debug, release on time applications...
Pure supposition on my behalf because otherwise I have no idea how they will manage to pull of a Ready for the Unwashed version in only one month.