A few weeks ago, when we were on RCI's Vision of the Seas I saw a couple of tools for wheelchair passengers which I hadn't noticed before. Not quite sure if they're really new or just new to me.
In ports of call where they used gangways which can get pretty steep depending on the tide, the Vision had a machine which chairs attached to. The bottom of the machine was a track (much like a miniature tank track). Once loaded on the gangway the machine simply climbed, or descended the gangway. They seemed very stable so apparently required alot less jostling.
For ports of call where the ship used tenders, they had a lift to lower wheelchair passengers to the platform used for tendering.
I thought these innovations were great. Making it much easier for these passengers to get on and off the ship.