Oh you're not talking about the splash screen (where it says 'made with unity' on startup). You mean the configuration window that appears before the game starts.
Yeah, that's there because it's where you can configure the inputs for your controller.
Yeah, the update supports PS4 controller. And of course the config window will no longer be there since we've changed out the input manager. These are the profiles I've defined so far:
https://github.com/lordofduct/spacepuppy-unity-framework-3.0/tree/master/SPInput...
And yeah, we can't move version. We're on version lock since updating to Unity2017 would be a huge amount of work. There's no point in doing that, it doesn't have anything we need.