you can now get E-Cycles 7 alphas in your downloads to test it. It is up to 3x faster than Cycles X!
As usual with alphas, be sure to only work in copies of your work and to make backups.
You are welcome to help spreading the word!
PS: for followers, you can get E-Cycles 7 from the Blender Market using the $1 E-Cycles Lite version :)