difference between sandy bridge and ivy bridge

I certainly hope one of them offers native support for PCIe 3.0, USB 3.0, SATA III and Quad Channel DDR3. Has anyone been able to pin down the difference in major features? I'm not talking about core counts or clocks - more which one is more future proof in regards to it's various buses (PCIe, USB, SATA, memory, etc.). All the way from Hard Drives to the CPU is getting upgraded - I may even get a little fancy with wiring and lighting if my budget allows for it). The reason I'm asking is because Sandy Bridge - E is supposed to be out in the next 4 months (probably even soon) and Ivy Bridge isn't far behind, but my Q6600 is having a little trouble keeping up with the work I'm doing in Solid Works, so I'm planning a major over-haul this winter break (Everything. I almost exclusively game-would you recommend me spend double on a Z77/Ivy combo or go for the cheaper option with Z68/Sandy I care about. I thought that the progression was going to go Sandy Bridge>Sandy bridge - E>Ivy Bridge, Ivy Bridge being the crowning jewel to 'Bridge' code names (with PCIe 3.0, USB 3.0, Quad Channel DDR3, etc) but now I feel like it's really more meant for a niche between main stream and enthusiast (I didn't know such a limbo existed - I always though you either knew about computers, or you knew about computers), with PCIe 3.0 and USB 3.0 thrown in (no Quad Channel DDR3, with integrated graphics). Hey guys, I've been holding out for Ivy Bridge for over a year now and my system really needs to stretch its legs with a new mobo/proc/ram upgrade.

I know that the specs for both have yet to actually be announced yet (or were the SB-E specs just announced?) - but I for the life of me can't figure out what the supposed differences are going to be (Intel is getting too confusing)? the most I have been able to pin down is that 'Ivy bridge is a 22nm die shrink of Sandy Bridge, and it uses 3D transistors/tri-gate transistors', but not much else.

Difference between sandy bridge and ivy bridge