Hello SpeedDial,
No, you do not have to. It's just to let you know that there is a new optional
driver version update. If you do not want to install it, then you can
hide it to not see it anymore in Windows Update. However, you might give it a try since it is a new version that may help improve your graphic card's performance. If not, you can always
rollback to the previous driver version.
Hope this helps,
Shawn