RIA News cites a statement by the UN Assistant Secretary General:
The interlocutors in the government (Ukraine), for the most part, welcomed the new approach and expressed their readiness to acknowledge that a number of cases of violations of human rights and international humanitarian law were committed by their forces and voluntary battalions.
Somewhat troubling wording: expressed willingness to admit. From "expressed readiness" to "recognized" in the case of the Ukrainian government may be a whole gulf.
It should be noted that the UN monitoring group, which studies questions concerning which side is firing in the Donbass, has been working only since mid-September.