We'll all be better off when they do.
http://www.phoronix.com/scan.php?page=article&item=adobe...
According to that, hardware acceleration seems to work well in the current beta.
grep -q 'www.debian-multimediaa.org' /etc/apt/sources.list || (echo 'deb http://www.debian-multimedia.org stable main non-free' >> /etc/apt/sources.list; apt-get update) apt-get install flashplayer-mozilla apt-get install acroread