Nothing seems to work right in touch IE11 on Windows 8.1, not even scrolling on the front page. Not a great showing for what's supposed to be a cross-platform mobile web framework.
FWIW, preserve-3D is not yet supported in IE11, even after the Windows 8.1 update. AFAIK there is no clear ETA on when preserve-3d support will land in Internet Explorer. My best guess would be in IE12. That being said, Famo.us currently works best on mobile devices, which nets you all of the iOS ecosystem and large portions of the Android ecosystem. Is it everyone? No. Is it a big market? Yes. Will it get bigger? Ye…
Since it barely works at all on desktop, this might still be completely true. I'm curious what mobile devices you actually tested this on though, based on the reactions of users here.