I hate to be a pessimist here, given that I do genuinely enjoy RWBY for all its flaws, but I honestly have doubts that WB's going to do anything with the IP by selling it to another company or make their RWBY content.
The company envisions a future Harry Potter game where you can "live and work and build and play in that world in an ongoing basis."
www.gamespot.com
After all these are the same numb nuts who have announced recently that they're going to double down on F2P, live service, and mobile games when Suicide Squad: Kill The Justice League has been a monumental flop of epic proportions since it came out in January
THIS YEAR. So as much as it's sad to say, WB is the last company I would trust to handle the IP.