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Here it says that V will not get it:
http://www.justaboutphones.com/sony-xperia-devices-that-wont-get-android-4-4-2-kitkat-update/
But it is best you contact xperia care:
http://www.sonymobile.com/global-en/support/contact-us/
is there any update to kitkat soon ?
The Xperia V will not receive the KK update as support has ceased for this device
http://www.xperiablog.net/2014/08/22/sony-ends-support-for-the-xperia-t-tx-and-v/
The only alternative is a custom ROM, check the XDA Forum
Hi, assuming that Android M will be the successor of Android L, will I get it on my Xperia V?
Again support has stopped for this device meaning no updates of any shape or form including any letters of the alphabet from K, L and M and those that come after
Like Thommo said, there won't be any further updates, not major updates nor minor bug fix updates, the only alternative are Custom ROMs