DSLM vs MFT
I'm not a fan of defining a class of cameras by what they are not - 'mirrorless'. Even 'single lens' is kind of obvious these days, and is a throwback to twin lens designs. "Digital" is the only part of the acronym that seems relevant
They seem to be all over the place - they use Compact System Camera followed by the ILC acronym on their US storefront... Then on the same page they refer to DSL, which seems to be the term they use when they mean both four thirds (which has a mirror) and micro four thirds. Maybe they are using DSLM to differentiate from four thirds ? I wouldn't read too much into it !