You should look into Magic Lantern. It is only in Alpha for the M, but this will give you time lapse as well as some great video tools.
I second this. It seems remarkably stable. I have some older, manual lenses, when used with focus peaking really bring a lot of fun to this camera. The only nit pick with the current ML release is the overlay sits atop the Canon menus, but it sounds like they have a fix in the works.
I'm not expecting a "new camera" with a firmware update, but an improvement will be nice, though I dont' have a big beef with the AF performance outside of a handful of times.
I agree with many that the tap to focus option is faster than the half-pressed shutter release.
The overlay issue has been fixed, but I don't think they have released a new download.
have they got the intervalometer features working?