https://support.hpe.com/hpsc/doc/public/display?sp4ts.oid=1008793289&docLocale=en_US&docId=emr_na-a00061428en_usJust when you thought you had a grip on all the 3PAR update types....
Along comes "Technology Release"!
Adds NVMe Storage Class Memory (SCM) Module for Caching and 32Gb Fibre Channel (Gen6) Add-on adapter for host connectivity.
Appears to be an early release of 3.3.1 MU4 with a few other bug fixes and the two new card options for 9000/20000 arrays.
I think the SCM cards are 750GB PCIe and the 32Gb FC cards are 2 port PCIe.