Yesterday on Twitter, xerub posted that extra_recipe got a kpp-less branch. Siguza then confirmed that in theory, a jailbreak for 10.3.1 was now possible, however xerub said that Cydia would need to be reworked.
This is only theoretically possible, and only works on 64-bit devices. It also theoretically works on the iPhone 7 and iPhone 7 Plus
Source
This is only theoretically possible, and only works on 64-bit devices. It also theoretically works on the iPhone 7 and iPhone 7 Plus
Source