If you're talking specifically tablets, then you won't get any extra input methods - when a tablet is used, your hands are in a position that only the touchsceen can be used effectively and your other appendages are not that useful for input.
So either we figure out how to make touchscreen+voice to work effectively for content creation, or we'll have to use something other than a tablet experience for that.
So either we figure out how to make touchscreen+voice to work effectively for content creation, or we'll have to use something other than a tablet experience for that.