Samsung stuff really tanks within a matter of weeks. Unless the S7 is somehow outstandingly better than the S6, which I can't see after the big redesign last year, I will pass. Or at least wait a few months and save a few hundred notes.
This year's Exynos was so far ahead that the S6/Note5 models will perform very well long into next year and beyond. They need to focus on the software and it looks like they're doing that. Obviously that itself might hinder S7 sales
If 3D touch does come then they'd do well not to fall into the trap Apple devs did: they're hamstrung by the popularity and userbase of the 5s and 6, as well as the iPad Airs and even the new Pro. Devs have to fudge a few actions on to say its enhanced by 3D touch. Reality is the core functions must be the traditional way or they risk alienating millions of non-6s owners and thus killing their own sales.
As much as I like it as an interface and see the potential, unless the hardware is rolling out or already being used, it's a tough sell to app devs. Apple set a bad example by not having it on the iPad Pro.