Did the unannounced LG Optimus L9 II just sneak past the FCC?

We've heard not a peep about a potential successor to LG's Optimus L9 since a couple of pics popped up on @evleaks at the beginning of June. The Optimus L9 II -- or just L9 II if recent naming conventions apply -- remains unannounced, but we've reason to believe it's just broken cover at the FCC. A device going by the codename LG-D605 passed certification today, and although we can't be sure it's the L9 II, that model number has previously been linked to the handset, if only in a mysterious GFXB...