Nadav,
I was surprised as well with the announcment. The LEED V3 projects we are doing are way to easy and it is time for some more challenging targets specifically for the energy. LEEDV3 is using ASHRAE 2007 references ... that was 8 years ago and ASHRAE 2013 is out now. So I like the idea to use the V4 credit for energy. Or build in some incentive to do so. I Provide online training which is of course V4. I have lots of students now preparing for the LEED AP V4 exam wondering how they are going to deal with V3, something they have never studied... Also, maybe there could be an incentive related to the amoung of V4 credits you include in a V3 project.