New SB Features
Swimming and diving
Shallow bodies of water will not work, you will auto switch to swim mode upon entering an area in which you can do so you can walk breast/stroke sprint crawl. Only flying mounts can swim. Swimming only available in limited areas.
Diving
Driving is only allowed in select bodies of water, no loading times when moving from swim to diagnose and no need to worry about drowning endless diving magically enabled.
Flying mounts will be able to dive. Diving only in 4.0 areas. Can interact with NPCs and Gathering while diving new Gathering stuff for fishers, diving will be unlocked by a special Quest.