Slush pool now allows miners that use their pool to choose whether they would like to point their hashpower to support Core or Classic.
This is great. Let people vote with their CPU. One CPU one vote.
https://twitter.com/slushcz/status/702091432459444225
It is not the case that Slush has moved all their hashpower into Classic, though:
https://twitter.com/slushcz/status/702104249090646016
Slush has not mined any Classic blocks yet.
https://twitter.com/slushcz/status/702107795924115457
https://twitter.com/MaaxSan/status/702109303277281284