Git master ("5.0.0 last") is stable, so I suggest to try that instead of 4.1.1.
There is no schedule for 5.0.0. It as 5.x because it has incompatible API changes compared to 4.x. More API changes are needed to get rid of some proprietary data types. So if we released 5.0.0 now, we'd have to make 6.x next. I prefer to get more API changes in 5.0.0.