Grinding Gear Games released the Forsaken Masters expansion a view hours ago and they were met with an immense flood of users. For the third release in a row, the player numbers were high enough to kill the website but leave the game servers intact. Player concurrency has already broken Sacrifice of the Vaal records and is still going up! Thanks for your enthusiasm and kind words. Enjoy Forsaken Masters and remember to invite some friends to play with you. We’ve ordered a lot more servers to fill!
The Forsaken Masters Patch Notes can be found here.