Itanium sold, barely, and still has people using it. But, as you can imagine, not with general-purpose software. By the 2nd or 3rd generation, Intel had made

Itanium sold, barely, and still has people using it. But, as you can imagine, not with general-purpose software. By the 2nd or 3rd generation, Intel had made some changes that really improved performance a lot. Was the final generation of Itanium the 4th generation?