Well, the omap5 wasn't 100% dropped...
https://www.isee.biz/products/igep-processor-boards/igepv5-omap5432
The PandaBoard 5 that was to be, ended up as the omap5_uevm:
https://www.svtronics.com/5432
You can still see the head of the "panda" silk-screened on the first
page of this document:
https://www.svtronics.com/index.php?route=product/download&product_document_id=309&product_id=33
(under the Texas Instruments paint edit..)
So while pandaboard community died, the panda 5 lived on..
But yeah, the am57xx shares many things with the omap54xx
Regards,