Skylake vs Broadwell:
-
Y-Series (MacBook): Up to 17% faster CPU, up to
41% faster Intel HD graphics, up to
1.4 hours longer battery life
-
U-Series (MacBook Air): Up to 10% faster CPU, up to
34% faster Intel HD graphics, up to
1.4 hours longer battery life
-
H-Series (MacBook Pro): Up to 11% faster CPU, up to 16% faster Intel HD graphics, up to
80% lower silicon power
-
S-Series (iMac): Up to 11% faster CPU, up to
28% faster Intel HD graphics,
22% lower TDP (thermal design power)
Given that Intel announced a
trio of Core i7 processors appropriate for the 15" Retina MacBook Pro just weeks later, and both the iMac and Mac mini still have Haswell processors,
it is plausible that Apple has chosen to skip Broadwell processors entirely and release Skylake-based Macs in late 2015 or early 2016 --
and the jump from Haswell to Skylake would deliver an even higher performance boost.