Shroud of the Avatar's Release 8. No really, it's time right now, as you're reading this. Portalarium has published instructions and a lengthy list of features (both included and not included) in this particular build.
The focus is on PvP this time around, and to that end both Scott Jennings and Chris Spears have posted tutorials. Jennings' takes the form of a PvP deck-building guide that's hosted on the SotA forums, while Spears narrates a 24-minute video that you can watch after the break.
Release 8 started at 11:30 a.m. EDT this morning and it runs until 11:00 a.m. EDT on Monday, July 28th.