Firefox 4 delayed until 2011

Mozilla has pushed back the planned Firefox 4 release to 2011, a delay that's no surprise given the difficulties in releasing the first full-featured beta of the open-source browser--but that also gives breathing room for several competitors.

Mozilla had hoped to release Firefox 4 in 2010, but a newly updated Firefox 4 schedule shows the first release candidate arriving in early 2011.

"Development on Firefox 4 has not slowed down, and strong progress is being made daily. However, based on the delays in completing the 'feature complete' Beta 7 milestone against which our add-on developers and third-party software developers can develop, as well as considering the amount of work remaining to prepare Firefox 4 for final release, we have revised our beta and release candidate schedule," said Mike Beltzner, vice president of engineering for Firefox, in a mailing list message yesterday.

For more on this story, read Firefox 4 release slips to 2011 on CNET News.