No. I went Ivy and I won't consider upgrading until Broadwell and that is a big maybe. Intel won't increase raw grunt for 2 simple reasons:
- No competition. No point.
- Nothing really need a big CPU speed boost. When the next console gen finally comes out four modern cores (and maybe more) will be it. Ivy fits that, any improvements are meh for a long while.
If you buy Ivy now you are set for at least two years. Its very unlikely that will change.