iPhone 5S Release Date Pegged for September 20th by T-Mobile Leak Josh Smith08/28/2013 Rumors of an iPhone 5S release date on September 20th continue to gain steam as a leak from inside T-Mobile claims the company is blacking out vacation days starting on September 20th. Apple is reportedly planning an iPhone 5S event for September 10th where we should find out about the latest iPhone 5S features and perhaps more about the iPhone 5C. Until that time, we also won’t see an official iPhone 5S release date, but with Apple’s predictable schedule and continuing rumors it’s time to put September 20th on the calendar as the most likely iPhone 5S release date.Advertisement T-Mobile and other carriers often restrict vacation around major launch events, and thanks to their kind action of telling employees about the restrictions in advance we often get a tip about when Apple plans a iPhone release. We also see logistics companies restrict employee time off during an iPhone release, to make sure enough staff is on hand to deliver the millions of pre-ordered iPhones. Read: iPhone 5S U.S. Release Date: What to Expect Look for an iPhone 5S release date on September 20th according to multiple sources.Advertisement Today TmoNews reports that a source within T-Mobile claims the company is blacking out September 20th through September 22nd. The report claims this is subject to change, but given that the timing aligns with our iPhone 5S release date prediction and various leaks, it seems the T-Mobile iPhone 5S could arrive on September 20th.Advertisement Even though leaks don’t yet point to AT&T, Verizon and Sprint blacking out vacation times yet, if Apple is planning an iPhone 5C and iPhone 5S release date for the 20th, expect it to take place on all carriers at the same time. This will likely include U.S. Cellular which announced it would carry the iPhone this year. TmoNews does point out that Samsung is launching the Galaxy Note 3 in early September, but doubts that T-Mobile would go through the trouble of blacking out vacations for the Note 3. The latest Galaxy Note 3 release date rumor points to September 27th, a week after the rumored iPhone 5S release date. While there is no mention of any special timing, typically we see stores open early for the event. Apple Stores opened two hours early for the iPhone 5 as did AT&T, Sprint and Verizon retail stores. Most stores selling the iPhone 5S on release day will be fully staffed, with more employees on hand than an average Friday based on our experiences at past iPhone launches. Read: Apple iPhone 5S MysteriesAdvertisement The iPhone 5S will reportedly feature a 4-inch Retina Display and similar design to the iPhone 5, but it could also come in a Gold color option at launch. We are hearing reports of a new processor that is significantly faster and possible motion sensing technology inside the iPhone 5S. There is also a lot of chatter about a fingerprint reader inside the iPhone 5S home button which would let users unlock an iPhone with a finger swipe and not a PIN. If the iPhone 5S release lands on the 20th, look for the iOS 7 release date to arrive on September 18th for the iPhone 5, iPhone 4S and iPhone 4. The iPad iOS 7 update may not arrive until later in the year.