I5 4460+16GB RAM is actually still ok for today.
Yes, there is a bottleneck on some new cpu heavy AAA games but it is still fine for most cases.
If you really want or need more cpu performance, skip every platform before AMD Ryzen and Intel Coffee Lake.
Important:
Because the next gen cpu (I5/7 9xxx) is already at the front of our door, I would wait for now and see how they perform.
If you really can not wait, I would consider these:
Red team: Ryzen 5 2600, 2600x, 7 2700, 2700x
Blue team: I5 8600k, I7 8700k.