@evleaks has now leaked Verizon bound Lumia 822 in White abound White wireless charging plate. Looks like in case of Lumia 822, wireless charging is inbuilt just like Lumia 920. This may be one of the reasons behind those extra 2 over Lumia 820. Rest of the specs are almost similar as Lumia 820.
Leaked: White Lumia 822 with white wireless charging plate for Verizon.