There's been nothing in the rumor mill, AFAIK
. Truthfully, the GNex/Rezound would be your best option if you are looking to upgrade right this minute. As with all tech, it is fairly outdated within 6 months, so if you waited this long to upgrade, why not wait a little longer for the next gen products?
I talk to corporate like a BAWSS!
DEVICE ► Nexus 5 / Nexus 7
ROM ► Dirty Unicorns
KERNEL ► Stock / ElementalX