Microsoft Japan also announced the official multiplayer beta test for the Halo Wars 2 which is going to focus on the new mode the Blitz. The game will be available from February 23, 2017 in Japan (International version release on February 21) on PC (Windows10) and Xbox One.
You can test the game between January 20 and 30, 2017 on Windows 10 and Xbox One and you will find the beta client in the Microsoft Store and in the Xbox Live store.
The Blitz Mode is a card game based mode where you have to build your deck like in a TCG game and you have to destroy the enemy with this way.
If you test the game during this Beta period you will get a gift deck package but please note that on Xbox One the Gold membership is required! You can find more details on the official Japanese Microsoft Blog page.