I exchanged emails with LA today, as well as spoke with them on the phone.
Here's what they had to say:
I'm excited to report that putter shafts are finally in production! The entire golf industry has been hit hard with delays in the supply chain so thank you so much for your patience. We can't wait to get the TPZ into your hands. Although I don't have a firm shipping date just yet, I'm cautiously optimistic that we'll have the .355 putter shafts available in the next couple of weeks, if not sooner.
After the email, he called me to discuss the Texas Rebar wedge shafts. As for now, they are exclusive to Byrson, but they do plan on releasing them to the market...just don't have a date right now. Hoping before year end. He said if I don't want to wait for those, could always go with the tour AXS blue in 105 for the wedges.