, Charles wrote

After a while, what will webkit mean?

It means that Blink will be to WebKit what WebKit is to KHTML.

KHTML is still being maintained, and code is regularly ported from WebKit back into KHTML. I imagine WebKit will still press-on. Remember that Apple did huge things to WebKit to advance their own agenda, mostly in ways that enable WebKit to be used to create aesthetic and fluid user-experiences - whereas Google's main motivation seems to be performance. Considering Apple's solution to poor performance seems to be to throw more hardware at a problem I think this is where we'll start to see differences.