Ron, I'm pretty sure what is being referenced is the addition of the micro ridge stylus. The prior model--LP-S did not have that stylus configuration. As can be seen in the update you referenced, all of the current models are now using a micro-ridge. I think the prior shape was an elliptical.
The other change that was added to the LP-S from the LP was an increase in the amount of metal in the body...resulting in a heavier cartridge. The body shape, weight and size of the LPS-MR is the same as the LP-S, but a lot heavier than the older LP.
Also to my knowledge the two big evolutionary steps in Benz' top-of-the-line cartridge were first the introduction of the brass frame, moving the original LP to the LP-S designation. And then afterwards the change from the Gyger-S stylus to the Micro Ridge.
Although word has it that this later change, as hugely positive as it was in regard to the improvement of the LP-S's sound performance, was to no small amount introduced due to issues with the Gyger styli as such.
I must admit that this is now just spreading rumours but it might still be telling us something that in the local Swiss press the Fritz Gyger AG has mentioned in interviews only last month that they are currently (!) revising the machinery that is polishing the styli because they see an increase in demand again making it finally worthwhile to invest the money. That is a comment that comes from a company that for quite a while already is really making its money with the production of highly specialized microvalves.
Nonetheless, the design is now a little long in the tooth, which is why it wouldn't surprise me a bit if the new Zyx's with the CF cantilever will show it off. My local Lyra dealer ( who happens to also stock the Benz LPS-MR) tells me that the Etna and the new Etna SL are in a different league as well. As they should be at a much higher price point!
Could you maybe elaborate a bit on where exactly the innovation in the current ZYX line-up lies? I'm hesitant to see this just in a carbon cantilever, which has already been around for decades and can be found in such humble cartridges like the Tonar/Nagaoka JT-555. A cantilever type which incidentally, quite surprisingly, has been introduced by ZYX just in the very moment when there was a general global shortage in boron cantilevers, a shortage which led other manufactureres to switch to e.g. sapphire (white corundum) or ruby (red corundum) as available alternatives to boron.
Don't get me wrong, I'm absolutely sure that ZYX makes great cartridges and that they know how to fine tune them to get the most out of them, justifying a new range of models. I'm just struggeling to see the large evolution or innovation in them when compared to a design like that of the LP-S. Innovation ist something which I personally would be more inclined to see in designs like the A95, Colibri or Atlas.