is zencash change for put-off the new asics?
when fork in algorithm will happen?

The current potential threat to decentralization posed by a single company producing an ASIC miner is something that the community feels very strongly about.  The ZenCash development team will work through the process to create a Hard Fork upgrade to the Equihash algorithm in the short term to address the threat.

We value decentralization and our GPU miners who are an integral part of the community.  Changing algorithms is an extremely complex activity and we are not going to rush into a decision that may compromise the safety or integrity of the Zen network. It’s important that we take time to conduct research and evaluate options to properly formulate a plan.