The New York Times tells us, courtesy of anonymous sources, that Microsoft will demo more slates next month at the Consumer Electronics Show in Las Vegas.
One of the new tablets will have a slide-out keyboard and will be geared toward people who want to be more productive on their laptops -- taking a shot at Apple's iPad, which many believe isn't ideal for productivity. Though I feel fairly productive with it -- but if I'm looking for more productivity, I'd rather sit at a desktop or a big laptop.
I think the tablet concept requires you to wrap your mind around the fact that it may not be ideal for ALL uses, but very good for certain uses.
Anyhow, at the last CES, Microsoft's Steve Balmer demoed its Windows-based HP Slate. But that ended up getting killed around mid-year '10.
So at this point, Apple will likely have had a year's lead over Microsoft in the nascent tablet computing market. Android tablets are expected to hit the market en masse soon, though Samsung's Galaxy Tab is already out and selling fairly well.