Oh, the tales FCC employees could tell -- if they were allowed to discuss them. A Nokia device, known only as the RM-877, has passed the agency's approval process. This mystery unit contains AT&T-compatible LTE bands (2, 4, 5 and 17, to be specific), pentaband HSPA+ / WCDMA (though AWS appears to be disabled in this particular variant) and quad-band GSM / EDGE. Additionally, it also sports NFC, Bluetooth and dual-band WiFi. According to the above diagram, the handset measures 130.35mm tall and 71.4mm wide, which makes it a millimeter taller and wider than the Lumia 925. We're still combing the documents for any more clues, but we've already seen reports that appear to match this model number with the EOS that we're expecting to see on July 11th.
Update: As we continue to look through the documents, we've noticed mention of the device being tested with a "camera grip" (model PD-95G). It definitely gives us more reason to believe this is the EOS. Additionally, we've also noticed that a wireless charging cover was involved in testing, which means it's likely optional, much like the Lumia 925.