If you don't need to launch an entire press release for every feature update, then Beamer is a great way to surface minor updates internally to your platform users. The internal news update that is shown to platform users allows us to add helpful content to logged-in users.
Storyly - Bring superb stories to your app
AnnounceKit - Announce product updates like a boss 😎
Zuck.js - JavaScript library that lets you add Stories everywhere
Headway - Keep customers in the loop about your product.
Stories as a Service - Add stories to your website with 1 line of code
Changelogfy - Changelogfy is an all-in-one platform to collect, organize and manage customer and teammates feedback, prioritize and build a product roadmap, and announce product updates.