iOS 13.4 et al
While Apple has only just dropped the first beta of iOS 13.4 last week, the beta cycles for point releases are usually fairly short, and there’s actually some pretty good evidence that Apple plans for a public release in March.
The new iOS 13.4 beta, which was also just released as a public beta, show Apple laying the foundations for some interesting new features like CarKey, and while that could still be a few months out since car manufacturers need to support it, one thing that Apple has promised developers is that they’ll soon be able to start packaging universal apps for Mac and iPad. The timeframe Apple has given developers for this? March 2020.
Since this feature almost certainly requires iOS 13.4, iPadOS 13.4, and macOS Catalina 10.15.4, it stands to reason that Apple will have to release these before developers can start taking advantage of them. iOS 13.4 is also expected to introduce support for iCloud Folder Sharing, and new Memoji stickers, while watchOS 6.2 will bring in-app purchases to the Apple Watch.