Aug 22, 2011 14:59 GMT  ·  By

Microsoft will open registration for BUILD, its upcoming Windows 8-centric event, in just three weeks, but so far it’s still impossible for participants to tell what they’ll be registering for.

The BUILD conference has already been completely sold out on just the promise that Windows 8 will be its star attraction.

With the event scheduled to start on September 13th, the Redmond company has yet to provide any actual details about what exactly it will provide participants, beyond the first deep insight into Windows 8, and how the next iteration of Windows will change the world.

The Agenda page of the BUILD Windows site continues to feature only general details, with the opening keynote scheduled for September 13 between 9:00 AM and 11:00 AM, but no additional info beyond that.

There’s also no telling just when Microsoft plans to share details about BUILD with the public. So far, the only update to BUILD was the fact that the software giant has cut all pre-sessions, citing the need to focus on the sessions instead of spreading resources around.

There’s a lot of excitement building around BUILD, with users expecting the Redmond company to share not just Windows 8 details but some bits as well.

While promising that a pre-release development milestone of Windows 8 will be easy to access and not a secret, Microsoft hasn’t revealed whether it will offer early adopters a pre-Beta Build or the full Beta release.

I don’t expect the company to offer any info in this regard until it will actually announce the availability of Windows 8 bits for testers.

Still, Microsoft needs to update the BUILD Windows website since I’m sure that participants will want to organize their schedule in accordance to the sessions presented at the conference, even if this will mean that some new Windows 8 details will be revealed to the public.