The "SDCC" Exclusives will be available online at P-Bandai USA for a limited time starting on July 16th. I think they'll only be up for about two weeks. I think there will be PLENTY available because all the cons are basically cancelled and Tamashii needs stock for SDCC, Asian Toy Fairs, and their global "Tamashii World Tour" and Dragon Ball World Tours that they all did last year.
Happy that some folks will finally be able to get 17 and 18. I have the originals but I might pick these up as well. I'm a Goku fanboy so I will obviously be getting UI Omen Goku. VERY INTERESTING that Tamashii has gone with this figure as an Exclusive. The torn shirts, sleeves, and sleepy face (maybe?) are all new molds and venturing into some new territory for Exclusives. I'm very much ANTI-new molds for Con Exclusives unless it's one or two minor pieces (like Goku's belt from the Namek 1.0 version).
I'm excited to see what Tamashii will also be showing at the "online SDCC".