Here is a collection of 30 free iPhone 6 and iPhone 6 Plus templates in Photoshop PSD, Illustrator and Sketch files and including front and angled views of the silver, gold and space grey models.
iPhone 6 White by musmodo
iPhone 6 Plus Free Mock-Up by musmodo
iPhone 6 Mock-up
iPhone 6 Free Mock-Up by musmodo
iPhone 6 Free Angled PSD Mockup by Vladislav Litvin
iPhone 6s / iPhone 6 Plus Line PSD Template