will dominion be part of ranked games,also when you solo que will dominion and SR use the same elo or will everyone have separate elos for each map?

I figure seperate elos for each map. And yes dominion will eventually have a ranked ladder however they will only do this a few several months after the release so that everybody has a good feel for the new playstyle before making it ranked.

They have said that ranked play will not be released alongside of Dominion, but it is a possibility in the future. They are planning for both a normal and draft mode, however.