1. Most cutouts will work fine(long as it lines up.). I have installed the normal 212+ that way for a friend with no problems.
2. It is a new fan, I have not seen it for sale yet. CM seems to sell it http://www.cmstore-usa.com/hyper-212-evo-120mm-fan-oem-package/
3. PWM splitters work fine with medium power fans. Many have the rpm(third and yellow on most cables, but watch it as some do not use that color) wires linked from both fans. This is not right as it can lead to a miss-read on fan speed. You can cut or remove that wire if needed.
4. Intel's LGA will not let the cpu pull out.
-Just turn the pins and gently pull.
-Wiggle the cpu cooler a bit to loosen it and remove.
Hope this helps.