updated 10:30 am EDT, Mon August 18, 2014
Specs would put device behind current competition
[Updated with clarity on RAM issue, NFC chip] Schematics leaked by Chinese repair firm GeekBar may suggest that the iPhone 6 could ship with as little as only 1GB of RAM, the same amount used in the iPhone 5 and 5s. If accurate, that figure would leave the device behind current high-end Android and Windows Phone devices, which typically have 2GB. Although Apple is known to optimize its hardware and software, this could mean that the iPhone 6 will have to halt background tasks and refresh browser tabs as much or more than the 5s, since it will have a higher-resolution 4.7-inch display. The schematics may, however, be referring to NAND flash memory (the "temporary storage" on the device), rather than DRAM.
French site Nowhereelse.fr has meanwhile posted photos of 1,810mAh batteries allegedly intended for the iPhone 6. That would contradict an analyst's claim that Apple is upgrading to 2,100mAh, but it would be consistent with an earlier leak. The 1,810mAh battery would only be a modest improvement over the 1,440mAh in the iPhone 5s, and likely offset by increased power demands, especially from the bigger screen.
Update: GeekBar says that its schematics also point to an NXP PN65V NFC chip being present.