What do u think? do u think apple will announce new mac pros on june 3rd 2013?
Intel is only introducing CPUs in the class that go into Mac Mini , iMac , MBP , and MBA on June 3rd. They are all 4 cores or less and have integrated graphics. Only the MBP and maybe the MBA are likely due for June updates though. ( The appropriate MBA components may not be shipping even though announced. )
There is a possibility that Apple could introduce something different from a Mac Pro with Core i solution in June but it isn't very likely. Or at least not very likely to be labeled a Mac Pro. If Apple changes directions they'll need a new product name.
It is huge misconception to think that Intel introduces a refresh of their entire CPU package line up at one time. They don't. The mobile solutions are more important strategically to them than workstation solutions so they are introduced first. The larger ( > 4 core solutions ) only come when the manufacturing processes are more mature (higher yields). At this point, the microarchitecture changes are trailing about 12 months behind on the larger die products.