I see nothing but upside.
Workflow the app is being acquired, along with the team of Weinstein, Conrad Kramer, Ayaka Nonaka and Nick Frey. In a somewhat uncommon move for Apple, the app will continue to be made available on the App Store and will be made free later today.
This was amazing, because it set off a lot of people last night. Workflow was also quickly updated by Apple to kill off a lot of Google based integrations. Most notably for Chrome and switching mapping to Apple Maps.
This was likely a legal move, as Marco Arment noted this morning on Twitter. Even so, the future is completely unknown to those outside of Apple right now. The app will either slowly die, be fully integrated into iOS, or live somewhere in the middle — gaining native integration, but with a more limited scope than before.
And either outcome is just fine.