Software update while being up to date

[Leto85]

This is rather strange, my computer desided to give myself the option to download the latest update while my game already have been fully patched.
I don't know what's going on but although I just will download it (again, perhaps?) I hope someone else here might recognise this problem and have a solution for it, or now how to get rid of it in the future.
I'm predicting I'm in some endless luss now so I hope I'm wrong.