They are not currently in the matrix and if Zelos shafts are added I would not expect to see them until next year.

Because the approximate weight of the Zelos-6 is 65 g, I would have been interested in trying instead of the average AMT 90 g shaft. I ended up with the 50 g graphite as it was close to a club longer than the AMT in the T400 for me.

Titleist does add some new shafts as they test them for quality and utility. So there is some small hope that it might appear during this year prior to the 2021 catalog. ...Or never.. I'm sure shaft testing is now at least 2 months behind schedule due to business closings. This may limit testing to working with the upcoming wood replacements and the shaft matrix when they are released.