Hello ashok_chandran. We can see that the last software update was on 06/27/2017. We don't have information about when the next software update will be available, but we can assure it will be available once we receive it from LG.
I received ZV7 today as well - showing security patch level date of 5/1/17. Didn't we have that update previously? I was thinking we'd get at least a June or July update.