Wonderful! Congrats Martin. Thanks for all you hard work on an amazing product.
FYI the latest version of Microsoft office 365 for Mac now has feature parity with the Windows version regarding 3d and can embed 3d objects - glTF files work particularly well. No animation within the objects are supported yet (in either platform) but you can do really nice smooth animations between object states (rotation, position) via slide morph transitions.
EDIT: Actually, the latest version of PowerPoint on PC does support internal animations within the glb file - but only if those animations were created with rigging. So skined animations work but node animation do not.
Unfortunately there´s a kind of ugly bug appearing with beta3 regarding keyframe selection - which makes it impossible to deal with it nor is a workaround available: https://www.cheetah3d.com/forum/showthread.php?t=13065
Simply load the AlienWalk.jas file and try to select or deselect keyframes.