This information is also in line with previous reports that the handset will no longer come with any modular components. (ibtimes.com)
These rumors do follow in line with previous reports. (iphonehacks.com)
The introduction of these new, granular buttons would certainly add more depth to content surfaced by media sharing apps as well as from retailers, which is in line with previous reports of what's being launched. (beta.techcrunch.com)