Insider level Version Current Build Release Date
Insider
(formerly Insider Fast)
1802 9112.2004 February 17, 2018

Version Release date Highlights
Version 1802 (Build 9112.2004) February 17, 2018 Various performance and stability fixes

Source: Update history for Office Insider for Windows desktop - Office Support

See also: Insider release notes for Outlook 2016 for Windows desktop - Office Support