Why has ProgPower USA switched from decimal points to Roman numerals?

Well perhaps it is because the first Prog Power (Chicago) and the 2.0 were actually held in the same year and that was a way Glenn could differentiate between the two? Just speculation on my part mind you.
 
ProgMetalFan said:
It used to be ProgPower USA 2.0... now we have ProgPower USA IV? Why? I thought the 2.0 idea was pretty neat...

Switching to Roman numerals from decimal points keeps others from confusing the festival with AOHell versions. :)

--Mike