Tablets - all tablets - are inferior for many types of content creation due to their lack of keyboards. Some are good for certain types of artistic work, though it helps if they are pressure sensitive and support pens. Some support external keyboards/input devices, which of course makes them as good as anything else.
However, in general, tablets are aimed toward content consumption, typically with subpar content creation input means.
You are both right and wrong here. Yes, all current tablets are inferior--not because of the touch technology, but because the operating systems used and the applications installed were not written with the touch interface in mind; they all use the touch as a pointing device, not as a true interface in itself.
You're definitely wrong about how tablet devices are aimed, too. You make the assumption that since iPhones, ebook readers and other similarly-sized devices are currently made for that niche, then all such devices can only be used in that niche. That's like saying smart phones are only good for enterprise use. Open your mind and look at where such a device could really be used. You might be surprised.
Nah, I wouldn't expect a tablet device to be able to do any heavy, complicated tasks. Consider the size, battery capacity, processing and graphics power, user input interface, etc., it would appear to be the wrong tool for those sort of intensive tasks.
My guess is that there would be a category of lightweight productivity and creative applications designed for the consumer (like iPhoto, maybe a simplified iMovie, simplified iWorks/office type stuff), rather than focus on "prosumer" applications like Logic, Final Cut, Photoshop, etc.
Think about what you just said here. iPhoto, iMovie, even iWork are streamlined, simplified versions of much more complex software. A tablet/slate with iLife and iWork installed would almost perfectly fit the niche of truly portable computing over and above the content consumption market that so many commenters here want to restrict it into.
speech input is not practical for most people who have to do real work, and especially not for places where the tablet is most likely to be used (while commuting, flying, out in public, etc.)
As a writer, I could strongly disagree with you here. I don't get my story ideas by just sitting in front of a keyboard all day; in fact, most of my ideas come to me in dreams and the quickest way to get these down is by having a voice recorder close to hand. Now, if that voice recorder happened to have the ability to convert speech to text (something I don't yet expect, by the way) then this device would be almost perfect for my needs.
What if the new surprise input method were a new evolution of typing using gestures rather than location on a keyboard. For example:
Simultaneous thumb-tap to enter typing mode. All letters represented by a finger tap, combination finger tap, or finger slide. Common words like 'the' could have their own combination as well. Simultaneous thumb-tap to exit typing mode.
Requires a learning curve but it completely eliminates the need for a visual keyboard or pressure feedback etc.
A very nice idea, but how many of us know how to read/write in Braille? I could see this device as potentially able to read Braille input in the way you describe, but unless you're blind, you're right that the learning curve would be steep.
My main question is how will you input text on the tablet?
If you have a text editor program, you can use swipes and gestures for some things(like making text bold or copying), but the main bulk of it is entering text. Therefore I hope Steve has some revolutionary way to enter text, other then simply the virtual keyboard that is on the iphone. If he does have this up his sleeve, and it works really well, the tablet will be a huge success.
For one thing, if the iPhone's virtual keyboard scales with screen size (as it does in some apps between Portrait and Landscape orientation,) then the virtual keyboard may be all you need for casual, short-term typing. I would also expect (and others have expressed this idea as well) that Apple's Bluetooth keyboard or maybe a USB keyboard will be compatible as well, considering the overall concept of this device. However, it seems you've missed the fact that Apple has patented (or an application for one, anyway) the means for a device to read strung-together characters (handwritten?) and recognize them as words rather than single characters, something like the way you are taught to touch-type by thinking the word, not the spelling. Hunt and peck may be good enough for some people, but with computers becoming as ubiquitous as they are in the modern world, touch-typing is not just for secretaries any more.
The point is that Apple's device (almost certainly to be announced on the 26th/27th) may allow for virtual keyboard, real keyboard and handwriting input. The first and last are practically certain, the second a good possiblity.