For those asking, both Lumia 735 and Lumia 830 should launch in US market very soon!!
While we have it from our sources that Lumia 735 should come first to Verizon and Lumia 830 should be heading to AT&T first, it may not be the case and AT&T may get both of them soon.
In fact, Nokia US site has already listed Lumia 735 and Lumia 830 as available soon and you can even sign up with your mail Id to get notified when they actually become available. Hope, it clears few things!!