This is very exciting but the wrong way to go.
But offering this as a plug-in has problems.
1) Those of us using the free WordPress.com service (such as me) cannot use this.
2) Apparently it makes use of iPad-specific features that others — Android and webOS — cannot use.
3) It’s against the grain of the Internet to make parts of it friendly to only specific devices.
While I’m very happy to see someone finally acknowledging how things must change — and has actually made a move to do something in that direction — this approach is not what’s needed for everybody.