What came after hi-fi?

If we look back at the evolution of audio technology, we can clearly see the progression from low-fidelity recordings to the advent of hi-fi, or high-fidelity sound. But, as with all advancements in technology, the question arises: what came after hi-fi? Did the industry simply stagnate, or did it continue to push the boundaries of audio quality? Have we seen the emergence of a new standard that surpasses even the clarity and depth of sound achieved with hi-fi systems? And if so, what are the key features and benefits of this new technology? It's a fascinating topic to explore, as the pursuit of better audio quality has driven innovation for decades and will likely continue to do so in the future.