There is a newer leaked version of this update. It addresses some of the issues, but not all of them. The dialer lag is improved a bit. The necessity to relogin to google every reboot is gone. It "seems" faster.
http://www.megaupload.com/?d=RHNAWUR0
Be AWARE that for some users megaupload has a pop up ad that if clicked on serves up a pretty wicked set of trojans and key loggers. It will only occur if you click on the popup link. I downloaded and installed sucessfully from the above link, but others have reported problems.
It installs the same way the first leak installed, and will wipe the phone.