The new Gmail will be launching soon. Another new feature to the updates to Gmail include Smart Compose. Using artificial intelligence, the new Smart Compose feature can predict what you will write and offers suggestions on common phrases as you type. The aim of the new feature is to save the writer time when it comes to repetitive writing and should help reduce the risk of making grammatical errors.
There is also something called Nudging. After a set period of time, Gmail will resurface unanswered emails and ask you if you want to reply.
See my previous blog post about additional features coming to the new Gmail.