It's an updated driver for your nVidia graphics adapter.
However, it is not advisable to update any driver if the existing one is working okay, as new drivers can often introduce problems which didn't exist before.
Certainly, updating a driver just because an update is available is not sufficient reason to go ahead with it. Updating drivers is not compulsory.
Note: it's unwise to post your email address. We don't reply to posts via email anyway, and posting it where anyone can see it will just invite more junk mail in your email inbox.