H4 visa stamping along with h1b extension

My H1b visa is expiring in Sep this year and the H1B extension has been approved until 2016. I will be visiting India to get married before September.

My question is can my spouse get a valid H4 visa until 2016 or will it be granted only until Sep 2013 considering my extension has already been aprroved.

Thanks a bunch for replying!