These are part of a bundle of mid iteration changes with a tooltip that accidentally went to PBE. Sorry! List includes stuff like tick rate on E from 1/s to 4/s.
No guarantees anything sticks around but I'd love to hear what you all think!
(I'll try to get a list out as soon as I can)
Edit: Note that this would not be the full changelist, we know Karthus Jungle is still quite strong without any possible buffs.