New Feature In App Announcement Widget

Similar in implementation to the recently released feedback widget that would not be for feedback, but one way broadcast of new features/capabilities to the users of our product, within our product. Aha users would create the content within aha.io that ultimately get's posted to the announcement widget implemented within our tool via a js snippet and be configurable to be as minimally intrusive as possible when inert, but popup or light up (or both optionally) when a new announcement is available. The widget would be generally theme-able (logo, header or background colors, profile image of poster, name or alias of poster) would enable HTML content especially images/gifs/video clips and could have a section to view previous announcements and link out to more information. It would NOT be automatically tied to broadcasting content within a release—would want more control than even a section of a release devoted to this, as I would want to launch it to customers on demand and not as a function of "shipping a release" where possible.