Just as last month, the March feature update of Outlook for Office 365 (Monthly Channel) was released a little late, or they really wanted to go for that April Fools’ Day release date.
Anyway, Version 1903 is available now and although there are no new feature updates to highlight this time, it does contain several bug fixes.
PowerPoint got several Morph Transition enhancements and Word, Excel, and PowerPoint got some Compatibility Checker improvements too.
Note: Depending on your installation type, this update can be installed via the Microsoft Store or the Update Now button in Outlook itself and updates Outlook to: Version 1903 (Build 11425.20202).