Mozilla unveils Firefox 3.5 Release Candidate

Saying that it still plans to launch Firefox 3.5 by the end of the month, Mozilla Saturday issued the new browser's first release candidate, the most stable and polished build delivered so far in the year-long development process.

Firefox 3.5 Release Candidate (RC) was the first milestone since Beta 4, which Mozilla released in late April, and the second to carry the "3.5" label. The upgrade was originally called Firefox 3.1, but the company decided in March that it had added enough new features to justify the larger bump in number from last summer's Firefox 3.0.

Mozilla has had to delay Firefox 3.5 RC several times because of lingering bugs that defied fixing. Earlier plans had envisioned its release in the first week of June.