Kotaku Australia are reporting this Ukrainian publication's interview with GSC's Studio Director Sergey Grigorovich. In it it he answers a huge number of questions, revealing little about the sequel apart from question one about "security" for the forthcoming game:
“Software piracy is an issue for us, we try to fight it, but within reason... Protection from piracy? Part of the content will be located on the server and downloaded as the game progresses. Permanent internet access is required. Text information, code and quests will be loaded through that connection."
I've contacted GSC for a statement.