Hi there. A tiny little question - is there anything significant about the little icon changing for a marked Dates table? On left, is if I open my pbix in Power Bi version December 2020. And on right, is if I open it in Power Bi version October 2021. Besides the little picture - is there anything else more significant going on?
Hello @michellepace,
Thank You for posting your query onto the Forum.
Well, I also use two different versions of Power BI i.e. March - 2021 and August - 2021. But apart from the changes in icon there’s no significant change going on. Everything remains the same with regards to “Marking the Date Table”.
It’s just Microsoft has updated the icon of Power BI with regards to that aspect and nothing else.
Hoping you find this helpful. 
Thanks and Warm Regards,
Harsh