There was no demo made for Divine Divinity based on the remastered version, but the original
demo (400MB) is still available. There are also demos for
Beyond Divinity (168MB) and
D2:ED (1.8GB). There will be a demo released for DKS shortly after FoV and DKS are out, which may be a better option that getting the D2:ED demo (with DKS being available in a couple days).