Rock, Paper, Shotgun has a response from GSC Game World to yesterday's report suggesting some sort of always-on DRM is in the works for S.T.A.L.K.E.R. 2. Word is that while such a plan is being considered for the first-person shooter sequel, they have not yet made a final decision:

The idea of implementing DRM came in as a possible anti-piracy solution. You know the severe level of commercial piracy we have here in ex-USSR region. This said however, there is no firm decision to go for DRM with S.T.A.L.K.E.R. 2 as of now. Be assured, we do realize how uncomfortable this solution is for the players, so we’ll continue looking for most effective, yet acceptable for all, way of protecting the game by the time of its release.