I think they will release the rMBA with a Broadwell processor, but might skip Broadwell with the MBP, especially the 13". It was last updated in July. Skylake-U Should be out at the end of Quarter 2 according to their roadmap. Skylake-U is what would be in the 13", while Skylake-H would be in the 15". I can't find Skylake-H on a roadmap, or even Broadwell-H on a recent roadmap. One from a few months ago had Broadwell-H coming in Q2. Perhaps they would update the 13" to Skylake and the 15" to broadwell? I'm sure Apple has a more precise idea of when Intel will be rolling out various processors than we do.
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How long after the skylake chip is released will Apple release it in the new rMBA?