I'm not sure about the haptic feedback rumors. Apple doesn't have a strong history with risky, new, experimental technology. I think their style is more that of waiting for a technology to mature a bit before integrating it thoughtfully into their product.

If you look at products like iPhone or iPad for example, most of their features had a first, proof of concept not-too-usable bare-bones implementation on other systems years ago (iCloud, Facetime, Siri, App store, iTunes, pre-iPhone touch screen devices that almost worked... ). This has lead many to complain that Apple unjustly implies that they invented these. What they often do instead, is take existing technologies and add Apple magic sauce to make it "just work". That's what they are good at.

I just don't see them releasing something experimental that has even a small chance of not working as advertised.

EDIT: As linked below, http://senseg.com/ seems to suggest that this technology is more mature than I've anticipated. Still, if this at least half works I'd first expect to see it first on an Android tablet and a year later on an iPad.