They have been mentioned a couple times but now they are listed on the Hodgdon website. The NEW Triple7 Firestar pellet. Not sure how new it really is (chemically) without a SDS to compare. Its currently not working.
https://www.hodgdon.com/triple-seven-firestar-pellets/
Cleaner Burning – More shots between cleaning
Higher Velocity – Gain up to 50 FPS
More Efficient – Longitudinal grooves provide more surface area for ignition
A quick search for pricing is $22-30/60 pellets. Just as a reference BlueMZ pellets are $19/48, Whitehots are $24/72 and the Firestars are $22/60 at Grafs. $29/100 for the original T7 pellets so they dont appear to be terribly out of line in price.