iTunes 12.6.0.100
Apple has released another update to iTunes. The 12.6 release the other day was version 12.6.0.95. This new release is 12.6.0.100.
This has happened previously. Apple released iTunes 12.5.0.63 on August 2, 2016 and then released 12.5.0.68 a short time thereafter—I think it was certainly by August 12.
Sometimes you just don't know how something is going to work until it's tossed into the wild. And you have to appreciate Apple's short turnaround.