It doesn't, they have released and abandoned about 12 hardware revisions. As for sysmenu support - not needed for the last 3-5 years and won't be needed in the future anymore.
DSTWO is a bit better but still horrible compared even to psp.
https://pongupdates.wordpress.com/flashcards-working-on-3ds/ - any of these cards will work on 9.8.0
DSTWO is not worth it unless you really need slow and buggy snes/gba emulators.
NO SHIT the psp is going to look better, but this is regarding flash cards specifically for the 3ds/dsi.