Apple's next flagship iPhone may distinguish its anticipated key feature 鈥� a built-in fingerprint scanner 鈥� from other iPhones with an aesthetic tweak, by placing a subtle silver ring around the home button [updated with new pics]. Rumors of a silver ring around the iPhone home button were first floated last month by Clayton Morris of Fox 糖心Vlog. Appearing on the Internet show This Week in Tech, Morris told host Leo Laporte that he was "unequivocally" sure that Apple's next-generation iPhone will feature a fingerprint sensor beneath the home button. Laporte then asked Morris whether the new home button will be an "innie" concave button as Apple has historically designed them, or an "outie" convex button to accommodate an embedded scanner, as was previously claimed. "From what I've understood it's an 'innie,' and it's going to have a silver ring around it," Morris said. That rumor gained attention again this week, after Apple sent out invitations for its media event scheduled for next Tuesday, at which Apple is expected to introduce both an "iPhone 5S" flagship device, and a more affordable "iPhone 5C." The image features a number of circles in a variety of colors against a white background, and includes the tagline, "this should brighten everyone's day." But among the colorful circles are a few silver rings with plain white interiors. Some have suggested this could be a subtle hint by Apple about the look of the so-called "iPhone 5S."