It seems that Monero’s Dynamic Block Size technology ( https://localmonero.co/knowledge/dynamic-block-size ). It’s called Adjustable Blocksize Limit Algorithm ( https://odysee.com/@BitcoinCashPodcast:2/ABLA_Explainer:2 ) and works on a slightly different algorithm, but it’s the same essential technology. The reason it’s good news is that it shows that Monero was on the right track (the blocksize wars were pointless) and the competing algorithm allows for both blockchains to test out and optimise future versions of the Dynamic Block Size technology.
It makes the privacy coin ecosystem more decentralized and unstoppable. If we have a DEX where they can all be easily swapped instantly then they become interchangeable.
If we have a whole bunch of private coins with roughly the same amount of users each then attacking one or two of them makes no sense because people will just hop over to another one.