Just did the 17th course for the last 3 days, there are quite a lot of changes...
0.4 second disconnection times for all finals up to and including 32A for a start.
Bathrooms have done away with zone 3 completely. Supplementary bonding can be omitted if other conditions are met. RCD protection for all bathroom circuits. You can even put a socket in a bathroom as long as its 3m away from zone 1 IIRC (If you have a bathroom that big )
RCD's also for all socket circuits, with one or two exceptions...
Also a few more special locations including fairgrounds and marinas! Woooo!