PPDB: Polymorphic lookups, release 57, and accessibility guidelines

This is the Power Platform Daily Brief for Monday, May 13 (brought to you by ClickLearn).

Today's big news is that canvas apps now support polymorphic lookup fields for Owner, Customer, and Regarding, as well as related activities and notes. See the official documentation.

Other news covered in today's daily brief:

• Release notes for PSA release 7: https://cloudblogs.microsoft.com/dynamics365/users/2019/05/08/release-notes-for-project-service-automation-update-release-7/
• What's included in D365 v9.1 service update 52: https://support.microsoft.com/en-us/help/4503238/service-update-52-for-microsoft-dynamics-365-9-1-0
• Canvas Apps Accessibility Guidelines whitepaper: https://powerapps.microsoft.com/en-us/blog/powerapps-canvas-app-accessibility-guidelines/
• Add new fields when creating canvas apps: https://powerapps.microsoft.com/en-us/blog/add-new-fields-while-creating-your-canvas-app/