Update CHANGELOG.md

[l-emele]

Summary of the discussion

Create new unreleased section from @chrwm's branch

Type of change (CHANGELOG.md)

PR-Assignee

• [ ] 🐙 Follow the Pull Request Workflow
• [ ] 📝 Update the CHANGELOG.md
• [ ] 📙 Add #'s to term tracker item

Reviewer

• [ ] 🐙 Follow the Reviewer Guide
• [ ] 🐙 Provided feedback and show sufficient appreciation for the work done