Do I need to get out of Steam's Beta program in order to get the finalized patch?

Or, since I participated in the program and downloaded all the beta patches, my game has already been upgraded (thanks to those beta patches)? And I thus don't have anything to do?

Correct...lol

Anyone in the beta...with current 1.4.21.0.4 version is the same as the released "Official " patch. Steam will see you have this version and do nothing! your good to go.

I had the Beta patch yesterday and the number of the patch is the one that was released today so there were no further changes. Today I saw that Steam had changed my options about participating in Beta and it says no participation now so they took care of it without me changing anything. Yours should also be that way.

Thanks for you quick replies! I had stopped playing since early January because I was fed up with the quests that I couldn't finish or which wouldn't even trigger. Now, I look forward to enjoy this wonderful game to the fullest extent!