On May a new Dynamics 365 for Outlook 9.0 is published, for online environments. It is supported on Windows 10 only.

Current client version: 9.0.2.0426

Download link: https://www.microsoft.com/en-us/download/details.aspx?id=56972

This new client is not yet well documented. At this time, it looks like SQL Server Express Edition 2012 is no longer supported for Go-Offline. But we have to wait for final documentation.

In my tests, the SQL Server Express 2016 was installed by default.

In addition, you find necessary language packs here: Dynamics 365 (online), version 9.0 Language Packs

An service or rollup update for the client package is not yet available.