The previous games in the series are available from Good Old Games, which doesn't use any DRM (
How are the first two Divinity games?), and Swen Vincke has stated here and on his blog (
The pirate in me) that he is not a fan of DRM.
Larian will be self publishing their future games; they have not announced anything about DRM, but at the very least I wouldn't expect them to start using draconian DRM or stop their policy of removing DRM some time after release.
