Yeah, they originally required a month between transfers, but shortened that a while back.

One other thing that may be a consideration for some people: Doing it by yourself requires a "Standard" subscription (the sort that allows you up to eight characters per server). If you've dropped down to the "Basic" subscription tier that only allows you one character per server, you won't be able to transfer to a world where you already have another active character. In that case, you'll need a friend to set up that temporary alt with which to create the name conflict.