According to the CS rep at Starline, future production date of currently back ordered brass - is any one's guess.
I've had QTY #500 .480 Ruger brass back ordered since May 2021.
Just prior to that, I backordered QTY #500 .45 Colt brass, & it showed up a couple of weeks later.
Go figure...

"Sometimes you make eight - Sometimes you hit dirt!"
Regards - GCF