At the end of November, hacker and unc0ver lead developer Pwn20wnd shared a Tweet indicating that Substitute — the primary tweak injection method for this particular jailbreak — would soon be updated to version 2.0 with a trove of improvements.
Without any sort of ETA provided at the time, no one could have guessed when Substitute v2.0 would launch. With that in mind, many unc0ver users were taken by surprise late last night when the update officially became available by way of Sam Bingner’s repository.