Apple has released an update to the fourth developer preview of OS X 10.7 (which was released during WWDC). Problems including odd quitting behavior in Chrome as well as missing icons in LaunchPad have been resolved. Apple seems to have made some subtle UI tweaks to the login screen, “About this Mac”, and full-screen app animation.
The update clocks in at around 656 MB, and can be downloaded via Software Update. For those keeping track, the build number is 11A494a. Lion will be officialy released to the public in July, and there are still a few bugs that need to be ironed out. It is likely that Apple will issue another update or release a fifth preview as the gold master build.
If you find any other changes or glaring bugs, let us know in the comments!