Direct from EVE Online's official website:
The update for Revelations 2.1 has been successfully deployed and the Tranquility server is now open for business. The patch included a Stackless Python upgrade that will significantly boost the game's performance.
And the patch notes are below. Seems like a fairly small patch.
Fixes and Improvements
Miscellaneous
- The memory leak, most visible when autopilot jumping long distances, has been plugged.
- The game client no longer randomly crashes because of network traffic.
- Character portraits that normally appear in the chat window are no longer deleted from the user's cache upon starting the game client.
- Users with EVE Voice enabled will no longer suffer from the disappearance of Corporation or Alliance chat channels.
- The In Game Browser works again with IGB-compliant websites.
- Cloaking no longer spams Logserver with stacktrace errors.