Insider level Version Current Build Release Date
(formerly Insider Fast)
1711 8730.2102 November 30, 2017

Version Release date Highlights
Version 1711 (Build 8730.2102) November 30, 2017 This is a preview of the November feature update and the same build that Insiders on the Monthly Channel (Targeted) level received on November 28, 2017. For a rollup of new features in Version 1711, see What's new for Office Insiders.

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