Core rendering systems at the very least, as DanielW said.
[=DanielW;331380]
Hey guys, thanks for your messages. The new focus for me is performance, especially on current gen consoles and mid spec PC. This means squeezing the last 20-30% out of many rendering systems.
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Also, NickP mentioned that rendering is not the only area which will be optimized:
[=nick_p;345645]
Big optimization push for many areas of the engine, not just rendering 
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So let’s hope for second Christmas!
Or, GIGACHRISTMAS 