As reported on WoW Insider you can now pre-download the 2.1 patch (at least what they have so far). Still no word on when it will be released, but I think most are figuring it will be this coming tuesday. You can get the pre-cache by launching the blizzard background downloader. I think it clocks in around 250 MB.
I’ve got my fingers crossed for soon.. There are lots of enhancements to my Hunter that I am looking forward to
(I know some of the nerfs are annoying, but we’ve all lived through them before.. And we’ll live through them this time too)
Enjoy the Download