Alright, I'll go ahead and update it. Talyrius, what modifications have you made, out of curiosity?
Improved Totem Frame will not be updated. Since the MultiCastActionBar will be removed in 5.0, there's nothing for this addon to modify. I will probably write a new lightweight totem bar addon that mimics it, though, since I don't really care for any of the existing totem bar addons.