As frogboy posted yesterday=
"Now, a couple words on multiplayer. The servers are up but we are not going to enable multiplayer until next week. Part of this is, to be honest, team exhaustion. The early release meant a lot of people who were expecting this weekend off to rest from the grueling last few weeks had to come in. So we’re going to let them get a couple of days off later this week and open up the MP next week.
One piece of good news on MP. Originally we had planned to eliminate tactical battles from MP entirely because of balance. Some people correctly guessed the misguided (in hindsight) reason for this: We were approaching MP from a purely competitive point of view. Based on the persuasive arguments made by our players, we have decided that tactical battles will be made available in MP – as an option – at a later date as a free update."