Welcome, Ali
blog.ycombinator.com
blog.ycombinator.com
This makes a lot of sense given the blog post a few days ago from `sama [0] — the evolution of YC from incubator to "meta-company" or network facilitator could only be helped by having more late-stage expertise on hand, so nodes don't drop out of the network.
A more hands-on, operational focus helps YC's portfolio companies. It also protects YC's investments when they reach their adolescent stages, where a lot of startups can ordinarily run into trouble.
I wouldn't necessarily put YC in the same bucket, given that it's been successful on its own terms for years now. This move feels more like an "vertical" expansion through the lifecycle of existing investments, and less like a "horizontal" expansion into whole new services and models.
That said, YC is a fantastic way for a young company to identify what's really important and to be reminded weekly (if not daily) to ignore everything else.
P.S. Good luck to all those interviewing for the upcoming batch.
[0] http://en.m.wikipedia.org/wiki/Business_Development_Company
Edit: For gods sake, that was a joke.
* taking more "hard science" companies in YC (fusion, biotech, etc)
* taking later stage companies (Quora, others?)
* getting aggressive about scaling YC #s
I'm sure I'm missing some as well