This topic will keep you informed of all the league updates as they happen on OSM.
Updates will come in three flavours:
(1) new season update - new teams/squads for the start of a new season
(2) revaluations - when the whole league is revalued during the course of a season and a lot of players are given new player ratings
(3) re-upload - when a lot of transfers need to be done in one go during the course of a season
New season updates (with the exception of some smaller leagues) will be available on the day (or sometimes the day before) the new season starts in the 'real world'.
For some of the top leagues, we will make the leagues available sooner, for example on the day or day before the league's Super Cup (Community Shield in England).
Any obvious errors can be reported at https://forum.onlinesoccermanager.com/topic/1518/real-world-player-errors-corrections/67