Project Titan from Facebook

Facebook in the near future will change the system message be webmail service.
Hopefully these web applications can beat Gmail ,that was already popular.
Like Gmail,access to POP/IMAP will accompany the application,call Project Titan,so that users can access the facebook email from various software and handheld device.
For email adress is expected to use 'usermane@facebook.com.'
However there has been no official word,when these service could be used