Kylacoin Core version 1.4.0 is now available from:
https://downloads.kylacoin.com/kylacoin-core/1.4.0/
For the release notes please see the git repository:
https://github.com/kylacoin/kylacoin/blob/master/doc/release-notes/release-notes-1.4.0.md
Do not use the links provided by GitHub, rather use the above download links, they are guaranteed to be generated deterministically.