# Octez v19.0~rc1 has been published

**URL:** https://forum.tezosagora.org/t/octez-v19-0-rc1-has-been-published/5887
**Category:** Research and Development
**Created:** [December 5, 2023, 4:11pm UTC](https://forum.tezosagora.org/t/octez-v19-0-rc1-has-been-published/5887 "2023-12-05T16:11:23Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![NomadicLabs](https://forum.tezosagora.org/user_avatar/forum.tezosagora.org/nomadiclabs/32/763_2.png) [@NomadicLabs](https://forum.tezosagora.org/u/NomadicLabs)
#### Post date: [December 5, 2023, 4:11pm UTC](https://forum.tezosagora.org/t/octez-v19-0-rc1-has-been-published/5887/1 "2023-12-05T16:11:23Z")

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A release candidate for Octez v19.0 (19.0~rc1) is available! If this release candidate proves to be stable, it will be released as version 19.0.

We invite you to test this release candidate on `Nairobinet`, `Ghostnet` or the upcoming `Oxfordnet` test networks, and to report any issue on [https://gitlab.com/tezos/tezos/-/issues](https://gitlab.com/tezos/tezos/-/issues) so that they can be addressed in time for the release of v19.0.

This release candidate contains a new version ([V11](https://tezos.gitlab.io/protocols/018_oxford.html#environment-version)) of the protocol environment, which is the set of functions that protocols can call.

This new version is used by [Oxford 2](https://forum.tezosagora.org/t/announcing-oxford-2-a-revised-15th-protocol-upgrade-proposal/5886), a revisited protocol upgrade proposal for the successor of Nairobi on Tezos Mainnet.

Octez v19.0~rc1 also includes the Oxford 2 protocol itself and its associated executables.

Starting from version 19, the rollup node is protocol agnostic.

A single executable, `octez-smart-rollup-node` can be used on all the protocols.

The old executable names have been kept as symbolic links, but will be removed in a future version.

The rollup client is not released anymore. Equivalent RPCs must be used instead of its commands.

Version 19 introduces a `history-mode` option for the rollup node. It can be either `archive` or `full`:

- The `full` mode implements garbage collection that reduces disk usage.
- By default, the rollup node runs in `archive` mode, without any garbage collection.

A full changelog and update instructions are available in the version 19 release page:

[https://tezos.gitlab.io/releases/version-19.html](https://tezos.gitlab.io/releases/version-19.html)

The Git tag for this release is `v19.0-rc1` and the corresponding commit hash is `7769d51b1b846c281c8bd9d2f26d46c92954cefd`.