Hi aaaronstarlin ,
Yes, the Modulo is still needed.
The difference is, that the result gets either 'Floored' or 'Truncated'. This only makes a difference if the result of the Modulo is negative.
For instance: -2.71828...Truncated is -2 (get rid of everything after the decimal point), while -2.71828... Floored is -3 (the highest integer smaller than, or equal to).
The Modulo itself still works in the exact same way and in this case, the result is always an Integer anyway, so it doesn't matter which one you use.
I searched for it almost at the same time.
To add additional context: I found the Chat, where the feature was implemented. There is a picture which illustrates the difference very good.
https://projects.blender.org/blender/blender/pulls/110728
Truncated is symetrical around zero and floored is always "left".