Intel is going to release the 4th generation before this summer, but is there a point for me to hang around for it?
Even if this weren't a highly subjective question to start with (whether or not something pays off is nothing any other person than the OP can decide) — what value would this question have in a few months from now?
This is one of the reasons shopping recommendations are considered off topic. They're often too localized to a specific moment in time.
And then, there's the guessing (actual quotes from the answers):
No one knows, but probably not.
… and maybe other things that no one knows about.
… will the first-gen motherboards be? It's too early to say.
We don't really like that kind of guessing. We like to solve actual computer problems and answer based on facts and specific evidence. That being said, the question would be perfectly suited for chat.
Maybe the question could be rewritten to be generalized to Intel processor updates, and reopened given a proper answer that'd even be valid for older and newer releases alike. But without the personal shopping aspect of whether it's worth to wait or not.