Mac OS X 10.7.1 was released today, both for Mac OS X Lion clients and servers.
Apple recommends it for all OS X 10.7 users. It includes OS fixes for stability and compatibility, as well as other changes and updates.
Client and Server-related changes and udpates:
* Address an issue that may cause the system to become unresponsive when playing a video in Safari
* Resolve an issue that may cause system audio to stop working when using HDMI or optical audio out
* Improve the reliability of Wi-Fi connections
* Resolve an issue that prevents transfer of your data, settings, and compatible applications to a new Mac running OS X Lion
In addition, there are some issues concerning MacBook Air (2011) and Mac mini (2011) systems that have been resolved:
* Resolve an issue where MacBook Air may boot up when MagSafe Adapter is attached
* Resolve an issue causing intermittent display flickering on MacBook Air
* Resolve an issue that causes the SD card slot in Mac mini to run at reduced speed with SD and SDHC media