The new light/super and new designs, almost from scratch, although they have some family connection still. While v3 is evolution from the earlier ones. “light” is designed to use as little CPU power as possible while maintaining no compromise technical performance. “super” is the same, but made as good as possible without considering CPU load (it is still not bad on that).
People were asking me for a lighter variant of EC modulators that could run on smaller CPUs and also work great for multichannel use cases. “light” ones are answer to that call. But do not underestimate “light” ones, they are are actually really really good! Sometimes I like those the most.
For example, if you are running HQPlayer on a laptop with battery power and you want best possible quality, “light” is the answer. OTOH, the unexpected feature I experienced during the design was all the grunt, drive and kick “light” can provide (in this case in particular through Gustard A26). While “super” has the final finesse on the sensitive tracks.