There is new "look" for Google Drive and you may opt in to new features in Gmail.

Google Drive: There has been no change in functionality, but some icons may look different  and some buttons may have moved. Read: https://gsuiteupdates.googleblog.com/2018/05/google-drive-ui-updates.html

Gmail: During the early adoption phase of the "New Gmail" users can opt in to try out new features such as Snooze and Nudges. You will also have quick links to Calendar, Google Keep and Tasks right from within your Gmail interface. To learn how to opt in please visit: https://googleresources.mansd.org/