Only a handful of people in the US will see the suggestions right now, and it's not certain how quickly it will expand. Messenger team lead David Marcus is optimistic, however. He tells BuzzFeed News that M suggestions may well accelerate the deployment of Facebook's AI by making it available to a much wider audience than the M assistant you see in testing right now. It won't be as deep as a direct interaction with M, but it would certainly be more accessible -- important when Google is ramping up its own AI chat helpers.