Tech Preview 2 MSI package will be available by Aug 25, 2008. It will contain 160+ fixes since we released tech preview on July 27.
(1) more stable on the TCP connections to traverse different kind of firewalls.
(2) better handling of Amazon S3 buckets.
(3) better usabilities on different UIs.
(4) better image copying between Google Picasa and local folders.
(5) various improvements for Windows Live SkyDrive and etc.
As a summary, it is more stable and more usable. Even though it is still not Beta quality yet, it is a great improvement as compared to Tech Preview build #1 a month ago.