"The Zcash Foundation has announced that it will make maintaining ASIC resistance an immediate technical priority in response to Chinese mining hardware manufacturer Bitmains claim that is has developed an application-specific integrated circuit (ASIC) miner that is compatible with the Equihash mining algorithm."
https://www.ccn.com/zcash-foundation-to-make-asic-resistance-immediate-technical-priority/BTCZ, Snowgem, Bitcoin Gold, Bitcoin Private, possibly Hush, Zencash want to change algorithm.
Still thinking about staying on equihash?
Exactly for this reason we plan to stick with whatever ZCash decides to do - we will simply adopt their changes and we're happy to go.
-Tom