The new names for the Office 365 ProPlus update channels are live – with another slight change. From September 2017 these are the final names:

• The “Current Channel” becomes the “Monthly Channel” with monthly feature updates
• The “First Release for Deferred Channel” becomes the “Semi-Annual Channel (Targeted)” with feature updates in March and September and each release supported for 18 months
• The “Deferred Channel” becomes the “Semi-Annual Channel” with feature updates twice a year, 4 months after the Semi-Annual Channel (Targeted) release in January and July, and each release supported for 14 months

There’s a useful blog post here: http://bit.ly/2qYqGD6 where you’ll also find recommended next steps and exact dates for the upcoming schedule of Office ProPlus releases.