Far and away, audio production benefits more from cores and memory speed than aggregate latency.
Now, if you’re talking about live performance, then that’s different. Queuing audio and/or realtime processing is better with less latency.
For recording, however, cores are best, then CPU speed, then memory speed. I have some numbers to back it up. I have posted them before, but perhaps a video is in order to explain to anyone curious.
Either way, AM4/X99 is still going to get you further for recording, editing, processing, and mixing than Z370. It is all about the threads, these days. All DAWs have both input and output buffers, so latency isn’t really a problem- not that it ever really was, for playback.
If you’re looping music for live use, then yes, Z370 would be great for that, as a powerful CPU would be capable of running higher sample rates, which halves or even quarters latency, making if even faster. The practicality of bringing a tower to a gig, in lieu of a laptop? Well… Let’s hope this new stuff makes it to a mobile chipset. Most performers I know of use MacBook pros, though.
All that being said, for the hobbyist musician, part-time gamer, full-time student, z370 is still perfect.