Sad day for long term players.. It is now official to get the 'exclusive' content you now need to move to the mobile platform. Is this the beginning of the end for PC players I wonder.
The phrasing in the annoucement might have been misleading. Right now, push notifications are an exclusive feature for mobile because it's a very common feature for mobile apps. Even if you do not actively play S1914 on mobile you can still install the app (once it's out globally) and rely on those notifications to alert you about in-game events.
That being said we are currently exploring the options to bring those notifications to PC players as well. This would take the form of web push notifications delivered through your browser.