Development on Ubuntu 21.10 ‘Impish Indri’ has now officially begun and the daily builds are now available for the download. Ubuntu 21.10 is due to be released on October 14, 2021.
Part of an announcement from the Matthias Klose:
We’re pleased to announce that impish is now *open for development*. auto-sync has been enabled and will run soon. As usual, we expect a large influx of builds and autopkgtests in this initial period, which will cause delays.
Ubuntu 21.10 “Impish Indri” Now Open For Development
Ubuntu Impish Indri Release Schedule
April 29 – Toolchain updated
July 01 – Ubuntu Testing Week (optional)
August 09 – Feature freeze, Debian import freeze
August 26- Ubuntu testing week ( Optional)
September 09 – User interface freeze
September 16- Documentation string freeze
September 20 – Beta freeze
September 23- Beta (mandatory)
September 30- Kernel freeze
October 07- Final freeze, release candidate
October 14- Final release.
You can download the daily build from this link