The GT4e promises to be Intel's best graphics solution to date, this 9th generation graphics solution offers 72 execution units and 128MB eDRAM. The GT3e is Broadwell's most powerful GPU, this eight generation solution offers 48 execution units and 128MB eDRAM.
The new GT4e graphics solution is rumored to be part of the Skylake-H quad-core lineup for laptops, these chips are expected to be out in early 2016.
Via: Tweakers