I don't think they ever announced this. But they actually started a new product 10+ years ago that would be a new game mode using the BB game engine. The best way to explain it would be a Career Private League mode that could go at its own pace with customizable rules. (They never finished the work on that, but they did ask me if I could resurrect that project).
My recommendation is that BuzzerBeater needs one of these two things that they currently don't have:1. Someone in charge who is invested in its success2. Become open-source so the community can invest in its success.p.s. If anyone wants to buy BuzzerBeater, let me know and I can put you in contact with the owner