Estimated release dates

Hi,

I am trying to coordinate MuseScore updates across many school computers to ensure they are up to date with students' personal computers.

Is there a rough release plan of a new full version every year? I have seen that 4.5 is expected end of Feb which is great, but it would be good to get a rough date for version 5.0 so that I can liaise with the IT dept and get the computers all updated at the same time.

Thanks very much