During the previous patches when you were creating multiplayer game if I'm not mistaken there was an option to choose what players level the server should be and the last item in the list was level 25+
I don't know where you people get it that the cap level would be 10? I said it several times here in the forum that in Grymforge you could be around 7-8-9 level and no one believed me. If we have 3 acts then I guess the max level would be around 25 indeed. Which is something okay, because we are talking about "normal" difficulty here.