Please keep checking for rumors!
It's back!
Confirmed tonight when tuning around with my 7600GR and also confirmed on the Pahrump/Radio Ranch kiwi SDR with strong audio, slightly quiet but there on W7RNA kiwi (must be on the null side of the loop), and even heard it through the noise of the garbage NO1D kiwi.
Not every night a mission starts off successful right when I turn on the radio. I'll have a look around more remote nodes and global tuners. Someone should update the wiki list since I don't know how to get in it.
edit: Also strong on the Utah TCI-530 despite the pink noise. Same 10 second interval.