Time for an upgrade 
Currently have i7 3770K, 16 GB DDR 3, Asus P8Z77 Mobo, Radeon 5850 & Samsung 840 SSDs
Thinking it's time for major upgrade, which I do every few years but what to do??
Skylake, DDR4, Z170, NVidia 1080, M2 Pcie SSD
This would give a fairly big boost and would be ready to update monitors to 4k when DP 1.4 available.
or wait for refreshed iMac in a few Months..........
What would you do?

Currently have i7 3770K, 16 GB DDR 3, Asus P8Z77 Mobo, Radeon 5850 & Samsung 840 SSDs
Thinking it's time for major upgrade, which I do every few years but what to do??
Skylake, DDR4, Z170, NVidia 1080, M2 Pcie SSD
This would give a fairly big boost and would be ready to update monitors to 4k when DP 1.4 available.
or wait for refreshed iMac in a few Months..........
What would you do?