I'll be upgrading identi.ca to the latest version of the Laconica software just after midnight on Friday. The next version, 0.6.1, features better support for commands in posts (like "d nickname direct message" sends a direct message to "nickname"); has API support for direct messages and faves; and has considerably extended memcached support, for faster response.
At the same time I'll be reconfiguring storage of PHP sessions to use memcached (another optimization), which means that users who are online before the upgrade may need to re-login after it.