Very, very likely to be using the new chips.

Will also be very curious how soon a new 15" MBP comes out, as Apple skipped Broadwell on their higher-powered model (as has everyone else; the only Broadwell quad-core laptops I've seen come from a handful of less-well known gaming-laptop makes.)

Looks like there also are finally some 16GB SO-DIMMs available, which will be huge for the few of us who need very large amounts of memory in our laptops (I carry a 7lb brick of a Lenovo for work to get 32gb.):
http://www.crucial.com/usa/en/ct204864bf160b