Blass tweeted the following message earlier today:
Sounds like iPhone 6s, 6s Plus, and 6c will all arrive concurrently.
A smaller 4-inch iPhone 6c has been rumored for quite some time; however, recent reports have suggested the device won't arrive until next year, with some claiming the model is scrapped.
Blass has consistently leaked accurate information in the past so there may be a chance that Apple unveils an iPhone 6c in September. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.