Download the latest Bitcoin Cash compatible release of Bitcoin Unlimited (1.7.0, October 11th, 2019) from:

https://www.bitcoinunlimited.info/download

https://github.com/BitcoinUnlimited/BitcoinUnlimited/releases/tag/bucash1.7.0.0

This is a major release of Bitcoin Unlimited compatible with the upcoming protocol upgrade of the Bitcoin Cash network. You could find November 15th, 2019 upgrade specifications here:

• https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/2019-11-15-upgrade.md

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

• Mempool synchronization via Graphene primitives
• Intelligent unconfirmed transaction forwarding
• Child-Pay-For-Parent implementation based on Ancestor Grouped Transactions (AGT)
• Graphene ver 2.1 and IBLT specifications
• New dead-lock detection mechanism
• New getblockstats rpc call
• ElectrsCash v1.0 (release notes)
• QA improvements
• Schnorr multisignature (Nov 15th' 2019 upgrade)
• Enforce minimal data push at the consensus layer (Nov 15th' 2019 upgrade).
• Transaction index database improvements (*)
• Add transaction rate trend graph in Qt debug dialog

Release notes: https://github.com/BitcoinUnlimited/BitcoinUnlimited/blob/dev/doc/release-notes/release-notes-bucash1.7.0.md

PS Ubuntu PPA repository is currently being updated to serve for 1.7.0

(*) if you were using BU with -txindex, after the fist session after the upgrade the database where the index are stored will be upgraded to a new format. During this migration RPC command will return an error message saying the txindex is syncing. The lasting of the migration process depends on the machine where BU is installed.