It's probably meaningless, but I was just at the Bag End site, and ELF(tm) is gone, replaced by INFRA. It might be interesting to know the real story. Maybe the patent is done, and Modular doesn't have to pay for the use of ELF anymore? Not likely, but perhaps the INFRA system is less expensive? Does anyone really know? ...just yammering...
Very interesting. I see that ELF is still a registered trade mark. There's only one processor! I did read something about improved manufacturing techniques. My guess is they've decided to hang their product identity on the coatails of their sucsesfull powered Infrasub line.