Old (from Battle Pack 2):
The big change here is switching from reveal to excavate. You can also check out the new official text over on the Card Database. Next, we have Bujingi Turtle:
Old (from Judgment of the Light):
The obvious change with this one is that you can no longer use Turtle during the Damage Step. It's a good change for rule consistency (and people that hate playing against Bujin, like myself).