Hardware device manufacturers release new drivers all the time. This is their way of
(1) fixing a known issue with their product,
(2) to improve the general performance of their devices
(3) to enhance stability issues on your computer
(4) as a way to provide new product features to you to retain their edge in the market.
So if you think about, if you don't update to new drivers, you could be missing out on A LOT of features that you could be benefiting from right now.