"New" button Counter

[ghost]

It would be neat to see the New button update with the number of new post created. New (x) or if more than (1x) or (*)

[Horndev]

I think what you are looking for is a "badge" somewhere to direct your attention to where new content may be since you last visited? Do I understand correctly?

Maybe next to each group on the left, show the group and a number like:

[ghost]

Yes this is exactly what i was thinking.