As of today (Friday 01 March at 04:00 PST) I cannot get past load screen. Everything went great in lobby and queue. Completely normal. Then I get to load screen, it blacks, and I get the "cannot connect to server" error. The one that's been happening for a few patches now, but only when you close the game during load screen and try to reconnect.
If it matters, I was playing Dominion because it's 7am here (EST) and it's a good warmup. Nothing has changed about my connection.
E: Logged in on a different account, starting a custom game. Still can't connect.
E2: I can totally spectate people, though.
E3: Not sure what happened, but I tried it on my girlfriend's laptop and after about 2-3 minutes of a black screen (in lieu of load screen) it just disappeared and the client popped up to the home screen.