My first reaction was "this just sounds like Mesos?". And it's cited in their page (which on first read I thought meant they were trying to act as a single pane of glass for Mesos/k8s/etc.):
In the OP blog post though, they assert "to our knowledge, there is no other open source scheduler which combines all types of workloads for web-scale companies like Uber."
And then, when you dig...it's just Mesos. They built a framework for Mesos. So, that's cool. But man, the puff piecery borders on dishonesty. I mean--Singularity has existed, and is implemented at very large scales, for a while. I'm sure Peloton is a fine scheduler, but there's a lot of huffing-one's-own-farts in the documentation here.