There's a live image here you can give a shot: http://ftp.gnome.org/pub/gnome/misc/promo-usb/gnome-3.10.iso

I think it's based on Fedora but I haven't tested it myself yet so I'm not sure.

I'm using Fedora 20 nightly now and it's working nicely. You can try it or the Alpha.

It will take some time for distributions to package the latest release. Arch Linux typically has the new release in a month or so.