I think your right. What I got from that thread was SCT can read the alcohol enrichment tables, but they can't turn them on yet.
Either way, exciting developments!
Supposedly with HP Tuners you can turn the switch but the tables either aren't populated or they aren't correct. It means you still have to do your homework but it should allow true Flex Fuel operation. I downloaded the latest update and didn't see any new tables for my 2011 but they probably don't have all of the definitions updated yet.
They are even enabling it for the GT350s.