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Riot Games has announced that the upcoming Dominion expansion is being made available to League of Legends players on a limited basis.
For instance, the Dominion feature was made available for approximately two hours yesterday. According to the dev team "hundreds of thousands" of Summoners took part.
The team plans to continue the limited availability of Dominion and suggest that players keep their eyes on the site for more information about the next play test.
Read more on the League of Legends site.