Our sister site, TmoNews, was sent the image above earlier today. It confirms that T-mobile is expecting something big around the 24th September, a Saturday. The “All hands day” has been called due to “an anticipated high-volume day.” Obviously, as an iPhone-centric blog we sincerely hope we see the arrival of the long awaited T-mobile iPhone. But, in truth it could be one of many things. With whisperings of a Sprint iPhone coming soon, it would be a good time for Apple to finally make the device available on all carriers.