According to @evleaks, the device on the right is the rumored LG G Vista. While it is unconfirmed as to what kind of device the LG G Vista is, some have speculated that the handset could be referring to the LG G Pro 2 Lite which has made its way past the FCC back in May. The handset is said to pack a 5.7-inch display which might explain why it looks bigger than the LG G3 whose display is at 5.5-inches.
While the handset is expected to eventually make its rounds and arrive on other carriers such as AT&T and Sprint, the Verizon version could be using a different name in the form of the LG G Vista. In any case we have no idea on when the LG G Vista could be released on Verizon, but if the rumors are to be believed, the LG G3 has been pegged for a release on the 17th of July, so maybe the the LG G Vista could be launched around that time as well.