AT&T internal document: Lumia 920 launches October 21st

WPCentral obtained an internal document from AT&T that states that the Lumia 920 will be launched on October 21st. WPCentral claims that their source is the same person that told them about AT&T's WP7.5 (mango) update plans.

http://www.wpcentral.com/att-eyes-october-21st-att-lumia-920