Facebook’s newly released update to the Messenger Platform includes new functionality, improvements to existing tools, while also deprecated legacy endpoints. Changes to the platform impact Click-to-Messenger Ads and provide new tools to encourage user engagement.
Google has apparently backtracked on the idea of allowing third-party messaging apps to access RCS on Android phones. Though RCS is a public specification, APIs are needed to connect messaging apps to the RCS protocols employed by wireless network operators. No API means no RCS for outside apps.