Doesn't look like it has OIS on the 56MM

http://imgur.com/a/6lrPW

Warning: The iphone 6 will brick after a restore if the home button is replaced. I agree with the other commenters that it is not a replaceable part because of this issue. If you try to restore the iPhone 6 after replacing the home button it will get stuck in recovery mode and give error 53 when a restore is attempted. I learned this the hard way! Please be careful and don't restore your phone if you do this repair.