They're still planning on landing both in the ocean, doesn't seem like they've gotten any more confident given that.

It'll be a while before they're comfortable landing Starship itself onto the launch tower, so an ocean splashdown is the best outcome possible. And the booster is going to be testing another one of those extra aggressive reentry trajectories.

They broke the previous booster by overdoing it, so it remains to be seen whether they'll find the balance between "fuel efficient" and "doesn't cause catastrophic internal booster damage" this time around.

They are new designs, not just some patches.

Given they've demonstrated all core steps (near successful re-entry, near-orbit insertion, booster catch) I'd say they are like 95% there.