Mike,
I would be surprised if that shows up for Haswell-E. Remember, Broadwell is the 14nm version, but Haswell-E, which ships next year, is still 22nm. Those chips also have 8 cores already, so integrating a huge EDRAM would be more expensive (relative to die size).
I might expect Intel to integrate the cache into the generation of EE chips after this one.
MichaelJ,
The rule of thumb is that we gain about one cache level per decade. It's not far off. ;)