After some 12 versions of trial and error betas (last one was Firefox 4 Beta 12 !) Mozilla has just put up Firefox 4 RC on their website for download.

We should point out that Release Candidate is the final version of the software application, intended for final testing by the developers for any bug present. If no bugs are found, this is the version that will also be eventually released as the final product.

New and noticeable features in to be included in the final version of Firefox 4.0 are a redesigned Chrome like UI, support for HTML 5 and updated support for some JavaScript engines.

Click here to download the PC version of Firefox 4 RC. If you are a Mac user, you need to download Firefox 4.0 RC from here.

(via product reviews)