Fact
The core Disenchant mechanic is unchanged from Classic — it consumes an Uncommon-quality-or-higher item to produce Dust/Shards/Essences — but a new 'Dust to Motes' recipe converts Strange Dust into other materials, and the Arcane Salvager/Arcane Forge campsite objects are reported to make disenchanting more efficient while active
Confidence note
Reported (Mobalytics is the only source with these specifics; general disenchant-unchanged framing is Confirmed)