SR is highly adept at marketing. All companies requires a continuous roll out of new products in order to grow, and who better than audiophiles to take advantage of due to our continual cravings for the next great thing? My guess however, is that you can take any of their current fuses, take them to McDonald's, have Ronald McDonald bless them, and call it a new model. I seriously doubt any new model would be significantly different in a meaningful way from their current line. You're better off taking a magic marker and put a new color on your fuses and voilà, you too now have a new model! Please excuse my skepticism, but SR is the poster child for these sorts of marketing ploys. As they say, YMMV.
I believe I posted previously in this thread that I heard a nice improvement from swapping Blue in for Black fuses. I would have heard the same thing had I taken them to McDonald’s for a blessing? Ouch!