As the HTC DLX (HTC 6435LVW) is the replacement for the Vigor/ReZound (ADR6425), it will be announced this fall like that device was. Almost a year to the date.
What remains to be answered is if there will be a Nexus version of this next year? Maybe to celebrate the 3rd anniversary of the Nexus One? I'm hoping the WSJ's rumors of multiple Nexii remains true and is not limited to the current crop with the Asus Nexus 7 (Eee Pad MeMO ME370T) LG's Nexus 4 (Optimus G) and Samsung's Nexus 10 (P10).