So it seems to be a wider move across the D&D.
Does D&D One have druid class released? Will druids be able to turn into an Owlbear there?
It does, and no you can't, but that's only because the onednd druid doesn't actually turn into beast/monster shapes by statblock, they get their own wildshape statblocks with flexible statistics, but you can just flavour it as appearing however you want. So you wildshape into your Animal of the Land form, and flavour it to look like an owlbear.
