I am unsure if the extra character slots are part of the deal or not.
From what i've been hearing around the forum its a no to the extra character slots but those you can always purchase more of later anyways. It is a good thing though that the borg char will not be included for those getting lifetime sub later otherwise we'd have to many borgs running around. Already from what I hear its sorta like the borg are no longer trying to assimilate the federation there simply merging with them. lol