[sisk]

For what it's worth, they already have something similar (for 3D-touch enabled models). Surprisingly, few 6S owners I know are aware of this feature.

http://9to5mac.com/2015/09/23/best-iphone-6s-feature-3d-touc...

[ColinDabritz]

This feature applies to other models, but without 3D-Touch it is activated with a two-finger scroll across the keyboard area. Very handy.

http://appleinsider.com/articles/15/06/11/first-look-ios-9s-...