v1.26 doc readiness

Timeline

Checkpoint	Due Date	Actual date	Details
New version doc setup	Nov 5	Nov 5	See the maintainer handbook for adding a new release
Relnotes: Call for notable changes	Dec 7		Squad leads to provide updates
Relnotes: CHANGELOG update cutoff	Dec 8		Doc squad to work with squads to complete review
Relnotes: Draft review	Dec 10		First run of release notes. Squad leads and the community to review
Zowe CLI: Update web help	Dec 10		Zowe CLI writer
Doc freeze, PR for publish ready	Dec 10		All v1.26 PRs merged. Action: Inform CI/CD squad Tom of the doc PR number. Add CICD members as a reviewer.
Update TPSR	Dec 13		Ashley will Work with CICD squad.
Doc publish	Dec 13		Work with CICD squad.
Release promotion	Dec 14 - 15	tbd	Slack, LinkedIn, Twitter, etc
System demo	Dec 20		See the OMP Calendar for details.
Write v1.26 release blog	Dec 24		Owner: Ashley Li

Archive the previous version from the master branch.
Bump the release version in the docs-staging branch.
2-3 days before the release date: Create PR to merge docs-staging to master to get ready for publish (PR state should be green)
- Fix all broken links
- For DCO failure, bypass DCO and inform relevant submitter to update the DCO_signoffs folder.
- Inform build squad of the PR

Immediately after the previous release is published: Update the release notes file summary-of-changes.md to add a placeholder section for the upcoming release (should include three sections: notable changes, new features and enhancements, bug fixes).
Inform squad writers to review the individual CHANGELOGs
Email and Slack to ask all squad leads and the community to provide notable changes entry
Pull CHANGELOGs content for the latest release to the release notes document
Email and Slack to ask all squad leads to review the first release notes draft
Email and Slack to ask all squad leads to confirm the final draft