Congratulations on the release! Thank you for all the hard work and great to see it come out in this timely manner. :-)
It's a relatively minor thing, but I noticed that the above URL redirects to
http://hackage.haskell.org/platform//
which is incidentally considered a different URL from
http://hackage.haskell.org/platform/
by Google's +1 service. Perhaps not surprisingly, http://haskell.org/platform redirects to the latter, single-/ Hackage URL.
I can reproduce this with Chrome, but not Firefox. Equally surprising to me is that the number of slashes also seems to affect the CSS presentation of the website in Chrome. // seems to give the Summer theme, whereas / gives the Winter one! Kind of weird. Anyway I agree it would be better to avoid the superfluous slashes if possible. I am going build HP 2012.2 for Fedora 18 soon but the first proper build may be after ghc-7.4.2 is released. Jens