http://www.androidpolice.com/2014/10/31/gmail-5-0-exchange-support-material-design-landed-apk-download/
The day is finally upon us - the Gmail 5.0 APK has landed, and we have it for your (production-signed) downloading pleasure.
As we've expected since we first saw the app more than a week ago, the new Gmail is very... "material." It's got a FAB, the beautiful thread interface we've come to know and love from Inbox, and a drawer that complies with guidelines.
But Gmail's beauty isn't only skin deep - the app holds some new features, too. The first one we noticed is of course support for corporate/exchange accounts, a capability that obviates the stock email app and promises to unite all your inboxes under one roof (unless of course you're using Inbox, which supports neither Exchange nor Google Apps accounts).
There may be even more goodies hiding in the new app, but while we dig around, head to the download below to get it for yourself. Note that if you want to enable Exchange support you'll need to install both of the APKs listed below.
Download
The APKs are signed by Google and upgrade your existing app. The cryptographic signatures guarantee that the files are safe to install and were not tampered with in any way. Rather than wait for Google to push the download to your devices, which can take days, download and install these just like any other APK.
File name: com.google.android.gm-5.0_(1520254)-5000600-minAPI14.apk
Version: 5.0 (1520254)
File name: com.google.android.gm.exchange-6.5-1520254-500064-minAPI14.apk
Version: 6.5-1520254