Announced during the Tencent UP 2017 Interactive Entertainment Press Conference, the Chinese version of Rocket League is a collaboration between Tencent and Psyonix, and will feature the core Rocket League gameplay that players have come to know and love," per a press release. "Some changes will be made to localize the game for the Chinese market, including that it will be free-to-play with items available for purchase."
Neither company went into detail on changes they have planned for the F2P version, nor did they mention what items players will be able to purchase as microtransactions.
Rocket League continues to build momentum. Psyonix announced that the game reached 30 million players earlier this week, following a milestone of 25 million players back in January. The developer is exploring porting the game to other platforms, namely Nintendo Switch, although no official announcements have been made.