Please exuse me, but I am new to Android. Am I right in thinking that the low lateny drivers in the new Juce 4 only applies to certain devices?
If so, which devices are slated for low latency to be able to make realistic synths?
Yes, the device needs to run Android M, and be a "pro-audio" device. Google have a special flag now in the app store so that you can mark your app as requiring this kind of device before it can be installed.