[quote user="rseroter"]A Beta1 is out now, but it may only be for TAP customers as it's on the Microsoft Connect site, not MSDN. Stephen got the target dates right for RTM.[/quote]
Right, there was one for TAP customers on Connect, but the program has closed. Basically they are not accepting any more applicants to preview the software.
As this is quite some time away and also not available, it will not be a consideration for evaluation, but it should be a decent quality release, given the amount of time that is being devoted to testing.