You are talking about free maps based on OSM maps?
It is as simple as it is: if you just downloaded, it is the latest. If you want to update in the future, check map manager for updates.
If you want to assist in testing early maps, check "early maps". You may get possibly faulty maps two weeks earlier before final update is released.
Map updates are monthly. In some cases, there may be some delay. But do not worry, at least the following month (not year or decade) you will get new maps.