Im running 2.0.6 that I downloaded. I just ran the update from the update method (power + X..etc etc..) It seems to be running fine for me.
But just out of curiosity I ran the SMU and noticed only 2.0.1 (stock option) as well.
Hmm, interesting find.
Edit: Maybe its a final release so no other versions of the ROM are needed any longer (remember, some options were removed as not being fully stable at the time and that was clearly stated by sholes)