PRM update for 3.7x

PRM5a updates the RO3 PRM’s to RISCOS 3.6, was a similar document ever produced for RISCOS 3.7x?

Don’t think so.

Am I correct in presuming it was a minor update for StrongARM support and beyond OS_SynchroniseCodeAreas being added, there are no functionality changes from 3.6 to SWI behaviour etc?

Or is that wishful thinking?

was a similar document ever produced for RISCOS 3.7x

The opening paragraph of application note 295 says “we also introduce RISC OS 3.7, and describe its enhancements over RISC OS 3.6” which may be what you want

Cheers, for reference the Application notes are available here