Blass simply tweeted, "iPhone 2016 release: week of September 12th", earlier today.
Last year, Apple launched the iPhone 6s on September 9th with pre-orders beginning September 12th for a September 25th release date. It's unclear if Blass was referring to launch week with his tweet.
Notably, Blass also revealed the codenames for the iPhone 7 and iPhone 7 Plus in a tweet last week.
It's widely expected that the iPhone 7 will feature simplified antenna bands, a larger camera, no headphone jack, and a second speaker for stereo audio. The iPhone 7 Plus is expected to get a dual lens camera for better zoom, 3GB of RAM, and possibly a Smart Connector. Other predictions for both devices include water proofing, a new space black color, and a Force Touch Home button with haptic feedback.
Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates on Apple's plans for the iPhone 7.