User blog comment:Zelron/The Elder Scrolls V: Dragonborn rumors (Imbedded deep the secrets sleep)/@comment-4057437-20121017034557/@comment-3492791-20121017051056

I doubt that they will add whole new perks. They are well aware that a lot of people max out their characters and don't want to alienate them. If any new abilities are added it will likely be like they did with Dawnguard. That the points need to upgrade will be acquired by some other means than standard leveling points.

As for armor, I assume they added the "Other" category for a reason. It didn't require any perks to make the Shellbug Helmet.