Microsoft is getting its head down to work and pushing out internal builds of Windows Threshold at a rapid pace and while we had heard that a fall preview was in the works, it looks like the end of September is now the timeframe for release.  It looks like the preview will be public but there are still quite a few details to be ironed out about the release.

The information comes from the reliable Mary Jo Foley and we can corroborate some of her information. While we have not specifically heard that the end of September is the definitive timeframe, we were told that a release for the enterprise would occur in the very near future. More significantly, internal builds now reflect this with an updated watermark.

Over the past few weeks, we’ve been slowly uncovering Windows Threshold with tidbits about its distinctive new interface, virtual desktops, Charms bar overhaul and now we are learning a little bit more about the development path of the project.

There are still more bits and pieces to learn about Threshold and we still have not seen any references to Windows 9 in the builds; it is believed that this will be the name, but it is still subject to change.