Last year, Facebook announced that they wanted to integrate Facebook Messenger into both WhatsApp and Instagram. It seems that Facebook has now started to integrate it into Instagram when users in the US on Friday began to report that the Instagram app had been updated with Messenger functionality.
The update replaces Instagram's DM icon with a Messenger logo and simply becomes Facebook Messenger. The actual functionality of sending messages from Instagram to Facebook users does not seem to be activated yet, but it will probably start soon.
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