Well, sort of...
Tim O'Donnell of Shamrock Cycles in Indiana, whom I 'd bet will be attending NAHBS next year, is working on a 650B utilizing Ventana's 5" swing-arm kit. Posting on MTBR as Loretta (one can only think of Major Hoolihan) in the newly named "650b, 69er and other new wheel trends" forum, has given us some sneak peaks into his shop while fab'n up this steel FS frame. Building with a mixture of Pacenti, Columbus and Deda tubing Tim has crafted this:
We can't wait to the see finished product!
For now, Visit Tim and Shamrock Cycles by hitting up