Posted on the HoN forum by the S2 CEO Maliken:
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We will very carefully have to open this up.
To answer other's questions: S2 currently has 210 game servers with 25 more EU boxes coming online this week. Each box holds 16 games with a max of 10 players.
Right now we can support 37,600 players online. We hit over 30,000 on Sunday so we're getting close to our max.
Very open and very to the point. And the right infrastructure to do a proper multiplayer game!
Just something to keep in mind...