I got to see the prototype set of the TS3 at The Golfworks yesterday (May 5, 2022) and they look like a cross between the TS1 and the TE Irons, but the bottom line is they're SEXY!!!
Was told by the Pro Shop to expect these to be ready for sale by the end of the summer/season, and I cannot wait!
Maltby TS3 & TS4
TS4 is sexy.
.................. especially that TS4.
Yeah, nice, but the coming TS1-IM with patented PoonFoam!
Who remembers the M-04? I have three sets of M-04 clubheads, one used and two new.
6 months later
- Edited
Check out this link with more pictures of the TS3 and TS1-IM.
https://ralphmaltby.com/questions/question/new-iron-picture-update/
a month later
I hope the TS3 comes out soon. I want to build something. 
Lately since it's damp and muddy, I've been playing my ultra GI irons, the STi's. And they are great. In my mind it is a tossup between them and the TS2 set. Just depending on the ground conditions. The TS2s will stick in the muddy ground once in a while, which kills my elbow. When it dries out, they are the better choice.
I think the TS3 will be like the TS2, except solid instead of hollow.