I use 3D touch daily and I really hope it stays. I didn't realize how much I used it until I had to use an iPhone 6 for a few days. It seems unlikely that they would get rid of it as it seems like they're adopting it in more and more of their products. Even more so considering that there's rumors of them removing physical buttons from the Apple Watch and being replaced with solid state ones...which I'm sure is based on their 3D touch technology?