The former is a media server that's halving the roundtrip latency on the Nexus 9 to finally achieve something under the sacred 10 ms mark.
The latter I haven't explored much yet myself, but they're calling it "a solution for Android’s USB audio and MIDI challenges" themselves.
Are these relevant to G-Stomper at all? I think they would certainly help latency, but at least the media server requires rooting your device to run, assuming it doesn't become a standard that OEM's ship with or that becomes part of Android. And as I understand it you also have to rewrite your app to use their APIs to take advantage of the media server, or it will just use the standard media server path.
Still interesting, though. It's a thorn in my side that iOS achieves 6 ms roundtrip latency with a shrug of the shoulder while the best of Android struggles to get 15 ms despite running on more capable hardware. Though even with these developments, that's still 19 ms if using the device speakers (down from 25 ms), something which doesn't make a difference on iOS.