WinterBoard 0.9.3912 (just released) runs on iOS 7 and seems compatible with ARM64; theme artists are encouraged to report any crashes/bugs.
For those who dare to experience @qwertyoruiopz's "unstable/glitchy" beta jailbreak IPA for iOS 10.0-10.1.1, Cydia Impactor 0.9.35 is ready!
The Copyright Office granted DMCA exemptions for jailbreaking: smartphones, tablets & other all-purpose mobile computing devices, smart TVs!
The TaiG 8.1.3-8.x Untether, version 2.1.2, supports Substrate! This package is available as an update in Cydia (from our Cydia repository).