I've added the previous games to my Steam account, can I add these new ones which have just been added also? I'm not home to actually try this yet but it would

I've added the previous games to my Steam account, can I add these new ones which have just been added also? I'm not home to actually try this yet but it would be awesome to have these new games managed by Steam also. Since I purchased this bundle previously I'm wondering if that is possible.