Amanero firmware update for “native” DSD, up to DSD512, is on the DAC side, see: https://github.com/lintweaker/xmos-native-dsd/issues/12 (2006be10 beta FW works without any glitches on my DAC).
On the ROCK side i think Linux patch is already applied for AMANERO, see: Native DSD on Moon DAC (ROCK)
So ROCK as an “native DSD” endpoint probably works, i agree.