The 2.3 patch became available for the Background Downloader last night; 222 megs of exciting changes.
I am looking forward to sending several of my mods bye-bye, such as CT Mod (I only use it for the mail mods), Fizzwidget's track menu, and several Cartographer plugins. I am also looking forward to the abolishment of the "Dead Zone".
I do not think at this time that the new content will go live this Tuesday, though it might on the Tuesday that follows. From what I am seeing at WoW Insider, there are a few tweaks to be made on the PTR.
But! It is exciting nonetheless to know that all those changes are just that much closer!The toons are all very excited, too.