This is a major release of BCH Unlimited compatible with the upcoming protocol upgrade of the Bitcoin Cash network. You could find Nov 15th, 2020 upgrade specifications here:

• https://gitlab.com/bitcoin-cash-node/bchn-sw/bitcoincash-upgrade-specifications/-/blob/master/spec/2020-09-15-upgrade.md

This is list of the main changes that have been merged in this release:

• ASERT: new difficulty adjustment algorithm
• DSProof: Double spend Proof
• libsecp256k1 update
• Benchmark suites update
• QA test improvements
• Improve code base parallelism
• Bundled with ElectrsCash new version 2.0.0
• Xversion upgrade

see the release notes for more detail:

https://github.com/BitcoinUnlimited/BitcoinUnlimited/blob/dev/doc/release-notes/release-notes-1.9.0.md

You could find binaries in this repository https://github.com/BitcoinUnlimited/BitcoinUnlimitedWebDownloads/