Intel's Developer Forum (IDF) starts on Tuesday, and the chip manufacturer is expected to discuss its Ivy Bridge refresh, Haswell, talk about its upcoming 32nm tablet platform, Clover Trail, and possibly share a few details on its 22nm Atom SOC's. Performance per watt is going to be a major focus at IDF this year; Haswell is rumored to be capable of idling below 10W. Intel always uses IDF as a demonstration platform and roadmap update, but it's particularly important this year, when competing foundries have struggled with 28nm and Intel itself just cut its Q3 guidance.