There's not too much difference between S2 and S3, but I wonder if this will affect Hybrid sleep transitioning to S4. Pretty sucky for mobile users, which is where I envision Intel was targetting Haswell. Desktop I imagine should be pretty much unaffected. They'll either be ON, OFF or maybe in S4 Hibernate. I've never seen anyone use the normal S2/S3 save-to-RAM sleep modes for desktop.