Devin Knight looks at a new Power BI custom visual:
The Timeline is similar to the native slicer in Power BI but has several more customizations available.
Not surprising, this visual can only accept date values.
If you need to adjust the start date of the Timeline based on your works Fiscal Calendar that is possible in the format settings.
This is a pretty nice visual, but when I tried to use it, I remember it feeling a little limiting, particularly around drilling into date slices.