I was on the row by row pages on facebook and several shops had their sample blocks...you have to just hunt and hunt for the various ones.
They can't give any out prior to the June 21 date but they can have the items displayed.
In fact at Hannocks of Paducah, they have the "official" fabric available to order already. I don't know how many shops will use the official fabric in their blocks though.
Was kinda sad last year to find so many of the shops had strictly applique on their row by row ... I'm more of a "piecer" type gal.