It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I am very happy that Worms Armageddon hit the shelves because it was my favorite 2d Worms, so I was wondering if there are new about Worms 4: Mayhem that instead was my favorite 3d one. Will it also come here?

(nb, I did not really try them all. It just memories...)
It might even be likely, in the case any other old Worms games arrive on GOG, it would be Worms Ultimate Mayhem instead.