It was already hinted recently that Broadwell is coming much later than expected, but now there are slides out that puts the bulk of it definitely into Q1 2015. Intel is has Broadwell not even on the roadmap for 2014 anymore. Atom 14nm is still on there. Some Broadwell may show at the end of the year. The exception are only a couple of 15W CPUs but as far as I can tell not the ones in with HD 5000 in the Air. For any MacBook Pro refresh it is safe to say people can forget about Broadwell until some possible Q2 2015 refresh or very late in Q1. Maxwell GPUs and 20nm GPUs in general for the 15" are the only significant upgrade that may show up sooner. Just as an update as many still seem to hope for some late summer refresh with Broadwell, which is nowhere even close.