No new rides, but several of the shows have changed.
The dolphin show was replaced by a new dolphin show called Blue Horizons, and it's terrific.
Oddeysea (spelling?), a Cirque du Soleil type show, has replaced the previous show in that theater (can't recall the name of the old show).
The sea lion show has a different show for the last show in the evening. It's really funny, but they only seem to do it in peak season.
They have resumed a water ski, waverunner, kite, boat show at the water ski theater. It's called 'Fusion'.
There is a whole redesigned area called 'The Waterfront', with 3 new restaurants, shops, and sidewalk type entertainment.
A new bridge across the lake.
Also, in peak season, they have a park closing water fountain/fireworks show on the lake.
The luau is better than ever, and they have a "Dine w/ Shamu' meal at Shamu stadium.
Think that's about it.