May just be me, but there were some distinctly unspecial special bikes this time.
I know it's a fairly arbitrary classification, but folders? Special? Not really.
There were some very regular looking DF bikes in the Fs as well - seriously, I could not work out what was different about them; regular wheels, bars, chain driven etc.
Doesn't really matter but seems a great shame to water down the category so much as it makes it less interesting to point and stare at.
One can question the need for the category at all if anything is going to be allowed in - it makes sense, to me, to have a special category for trikes/tandems/bents/velomobiles to give them a little room for the first few km without regular DF solos flitting about.