... is now the same as the Mozilla / Official spec version, which is great because 1) it's easier to write and technically more powerful and 2) yay standards!
It's only in the WebKit nightlies, but I'm sure will be in the next major releases of Safari and Chrome.
So is
-webkit-gradientgoing away? Certainly not! We’ll maintain support for-webkit-gradientfor the foreseeable future for all the existing content out there that uses it.