Mozilla developers have said that they are aiming to launch the stable edition of Mozilla Firefox 3.5 within the second quarter of this year.

They have just released the fourth beta of Firefox 3.5 edition which has been under heavy development for months now.

The release was earlier named Firefox 3.1 but it was recently renamed to Firefox 3.5 due to magnitude of feature updates in this release.

Mike Beltzner, director of Firefox at Mozilla said that they are aiming to release a single RC edition of Firefox 3.5 though they cannot be sure about how many it would require.