Even though it doesn't do a proper respring process like other JB's, and is a flaw in Yuca JB for now,
G Moran's (eclipse dev)'s CydiaRespringFix is great, to click it instead of running killall -9 SpringBoard
sometimes I still click restart springboard out of habit and get stuck on a black screen, this avoids that!
gmoran.me/repo is the repository, for those who already on the unstable JB
its been a pretty lovely experience on my 7+, just to give an update, so far,
main gripes after a few days:
-injecting takes a few tries (triggers reboots when fails) on a cold boot usually,
-7 day cert side load for now, if you don't reboot you can go as long as you want i think unless you get kicked off the tether (like how 9.3.3 kicks you off tether sometimes, over weeks),
i don't see a stable version addressing this tho, we need an app store app injector, or a jbme, or a 1 year dev account,
-no proper respring, without 'workaround' Terminal command or Moran tweak, you get stuck on a black screen
-included cydia, have to swipe touch left part of account management and stuff to make it work (and track changes, etc), tweak list and repos is just an easy click -- supposed to be fixed with new 64-bit cydia beta
-cell service and iMESsage went kaput, had to run 4 commands and not a problem since (the tweak to fix it did nothing for me, probably because it hung on black screen and didn't complete properly)
-There is a separate process to enable substrate, SubstrateFix, and it doesn't boot with substrate upon tethering the JB with mach_portal (its like a two step tethered jailbreak effectively, since without substrate, you are a lot more limited with what you can do)
it sounds like an awful lot of cons, but I am ok with them/ have come to terms,
I also still await a final-ish, stable build, but more eagerly await what we're going to do about the signing side loading issue of 7-day expiration for non-dev accounts,
this one didn't come with a baked enterprise cert like Pangu (may have been an ent profile exploit specific to ioS9, don't really know/remember)
NO RAGRETS