If my math is correct - his measurements are 39,96 x 26,97, which work out to 26 15.5/16" x 39 15.4/16".
Not very far off from 26 15/16" x 39 15/16".
I would expect a reprint to be undersized, while his measurements are slightly oversized.
I haven't seen any reprints without the Sonis logo, not yet anyway.
Jason.