You can now turn your alpha/beta key in a GOG key. If you gave away a key, you can have that destroyed too and ask for a new Steam key. Please do inform the people you originally gave the keys to that their version will stop working. Especially if you sold an alpha/beta key. Please only destroy a key if it's really necessary. If you are happily playing with your Steam key, there is no need to destroy it and ask for a new one. This is just an option for people that played the Alpha on Steam and now want to move to GOG.
