"When you get the next Gmail iOS app update, you’ll notice some exciting changes: The biggest overhaul of the app in nearly four years. It's the Gmail you know and love, with a fresh new look, sleeker transitions and some highly-requested features. It's a lot faster, too.Gmail and Google Calendar get a whole lot better on iOS
With the new app, getting things done on the go is a lot easier — whether you’re trying to find a message your colleague sent you last month, or trying to get through your work inbox on a Monday morning."
Tuesday, November 08, 2016
Gmail and Google Calendar get a whole lot better on iOS (Google blog)
Evidently Google now agrees with Microsoft on the importance of maintaining first-class iOS apps