If you are operating in the southern hemisphere (or if you run a winter competition in the northern hemisphere) then you can now adjust your season start month.

Previously it was hard-coded to July.

Now you can adjust it to whichever month you like. You can configure it via Setup/Stats Site Config:

If all your games have always commenced in September then you can set it to 9=September. If some games started in October some years and September in others then pick the earlier month, or even choose August to be safe.

If you previously had it set to use the YYYY/YY format then it has been set to July for you already.