I don't think it is completely operational yet, but the new website, including this forum, is much, much faster. I'm writing this post from my iPhone which sometimes wouldn't load at all. But now it is lightning fast!
for the exception of the forum area (which will be improved but not immediatly) everything else should be retina-ready. On a retina mac book pro (both mac osx or windows on parallels) you could appreciate it (just few details need to be improved, but as you could see facebook itself is a lot less compliant than our little website.