After I saw the leaked picture of the Motorola made Nexus 6 listed on AT&T's website being shared on Google+, I immediately went to check it there myself. As expected, there was no trace of it - the link had been removed. Now I didn't think it would work, but just thought of trying my luck - and initiated a chat with their customer representative by their 'Chat' link. This is what I got from that conversation:
AT&T sales representatives are happy to assist you with your questions.
You are now chatting with Samantha No., an AT&T sales representative.
Steve: Hi Samantha
Samantha No.: Welcome to AT&T online Sales support. How may I help you with placing your order today?
Samantha No.: Hello Steve!
Steve: I want to buy a phone from your website,
Steve: but its link was apparently removed
Samantha No.: What phone were you looking at?
Steve: It's the Motorola Nexus 6
Steve: May I know when will it be available to buy?
Samantha No.: Let me check if we still carry thta device!
Samantha No.: that*
Samantha No.: That device will be available tommorow!
Steve: What? Really? Awesome!
Samantha No.: Yep!
Samantha No.: Is there anything else i can help you with tonight Steve?
Steve: Nope, that's the greatest help I got from any AT&T representative ever ;)
Steve: Bye, Good night!
Samantha No.: Thanks Steve have a great night!!
The chat session has been closed by your AT&T sales representative.