Apple has released iOS 10.2 beta 7, build 14C92, as an over-the-air update, which is also available in the developers download centre. The quick turnaround update comes just two days after the sixth beta was released, signalling a public release is forthcoming.
The last time we saw iOS reach a seventh beta was with iOS 10.0, which hit up to eight betas before the GM (golden master) release.
Apple earlier stated an upcoming iOS update could include diagnostic features to help address battery issues plaguing some iPhone 6 and iPhone 6s users.
The public beta should be coming shortly as well.