Default Is there a root exploit for KitKat?

I figure the vzw version of Kitkat will be dropping soon and from what I've been reading I may not like Kitkat due to the way it handles the SD card. There are already other versions of Kitkat out there released by other providers. I wonder if there is a root exploit available once accepting the update in an unrooted state? I wanted to wait until warranty expired to root but not want to miss my chance entirely. Thanks for your help... Or even your opinions. I haven't been able to find a thread on this anywhere and it seems pretty important.

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