Archean_0-1354672 :
will a motherboard that supports the i7 4770k retain upgrade-ability for the next generation?
also what would be a good motherboard to be used with the i7 4770k?
A 4770K would be the best at stock. It will be about 10-15% more capable than stock with a conservative overclock that the "K" permits. You will need a Z87 based motherboard. Pick your favorite brand, they are all good. If you need specific features like sli capability, wifi, extra sata ports, then you would look for them and expect to pay a bit more.
As of now, broadwell 14nm may not show up on the desktop; more likely it will be a haswell refresh. Both should be compatible with Z87.