The Soulcalibur VI Network Test officially kicked off this morning.  It is open for all to enjoy, before the official release date on October 19, 2018.  The beta client can be downloaded for both PS4 and Xbox One.  The following information has been taken from BANDAI NAMCO's Network Test description:

Network Test Schedule:
Start: September 28th, 8:00 AM (PDT)
End: September 30th, 8:00 PM (PDT).

Playable Mode:
Ranked Match in Network Mode.

Playable Characters:
Mitsurugi
Sophitia
Grøh
Nightmare
Xianghua
Kilik
Ivy
Zasalamel
Geralt
Siegfried
Taki
Yoshimitsu
Maxi
Talim
Tira
(Please note that in the full release of the game, Tira is included with the season pass or can be purchased as DLC.)

No. of Available Stages:
9

To get yourself a head-start, Esports pro Kayane has created a Xianghua guide based on her time with previous demo builds of Soulcalibur VI.  Given that Kayane's fighting game experience started in 2001 and she's proven herself in both tournament winnings and in 'blindfolded' challenges, her guide is definitely worth the glance:

If you aren't able to get your hands on the beta test this weekend, jump on Twitch.tv to see who's currently playing it. 

Esports personality "Maximilian Dood" is currently live. 

And his thoughts on the Network Test?  In his own words, the connection is "fantastic".