I think our league switched to a 10" Incredibale for 6U the last year my daughter was 6U. If I remember right it also came in pink which was a big hit with the 6U girls but that was several years ago so my memory could be hazy.Eric- what 10" ball do you use for 6u?
All the leagues I'm aware of in Nor Cal ASA use the 11" ball for 8u, but that might be changing now that I've heard that Region 14 is defining rules for 8u Championship play.