New Testnet release test-6.1.1, mainly with fixes to ES plugins: https://github.com/bitshares/bitshares-core/releases/tag/test-6.1.1
Testnet nodes running ES plugins need to be upgraded. Other nodes are recommended to upgrade too, but not required.
Docker image: docker pull bitshares/bitshares-core:test-6.1
(note: bitshares/bitshares-core:test-6.1.1 is also available if you want to pin to a specific patch version).
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From @bitsharesgroup