Its my understanding that SRATCOH is being ammended as we speak! The current 4 pages of limitations of controllers hours aren't deemed to be complicated enough, so some wag has produced a book sized document with even more whats, ifs and buts!
From what I've seen there isn't a lot of change to the bones, but it does allow more working into the current night shifts (ie VERY early mornings and late afternoons) in the interests of more flexible rostering. This will of course be superfluous when Europe rules that night flights infringe my right to a good night sleep though.