> Jazz has moved past the standard 'swing and ballad' forms that were popular throughout the late 20th century

I mean, that's not really saying much. Jazz moved past the standard stuff with Ornette Coleman, Coltrane etc in the late 50s and early 60s. Miles Davis' Bitches Brew led to the whole jazz fusion thing a bit later.

I somewhat agree with the GP about no groundbreaking new jazz artists. There are many great musicians great at their instruments today, for sure. But I just don't hear anything radically new happening. Although I do admit that it may be due to my own biases.