I cant imagine any new round is really needed.

Most of the newer rounds hitting the market are driven more by marketing departments than hunters.After all there is so many ways to spin things on a 30-06, 308, 270 or any of themainstreamcalibers before every anglehas been covered a 1000 times over.
I do like the 270 WSM, 338 Federal and a few other of the newer ones that have come out recently but are they needed......that's up to each of us to decide.

However, I do like the idea of reintroducing some of the older rounds, with the new powders available today some may even become semi-popular.