Steve Jobs announced the Apple iPad on January 27, 2010 in San Francisco.
See related links for more information on the product.
You can purchase Apple Numbers, Pages and Keynote for the iPad separately. These three applications make up the iWork suite for OS X.
Keynote presentations created by Keynote 2010 and newer can be opened with the Keynote app.
There is no such Apple product by the name of iPad HD.
Download the Apple Pages and Keynote from the app store. They can import Word and Powerpoint documents.
You can make a Keynote presentation using Keynote for iPad, which costs $9.99/£5.99 (I think) and export it as a PowerPoint file.
It already came out!
Apple has a program called Keynote which is similar to PowerPoint on a PC. Keynote files are the presentations created with Keynote.
Special versions of the iWorks applications (Keynote, Pages and Numbers) have been created for the iPad. They will be available from the online App Store for $9.99 each when the iPad is launched but are not included with the iPad. (See links below)
iOS 7 is Apple's seventh generation software for iPhone, iPad, and iPod touch. Code-named "Innsbruck", it was introduced by Apple during the WWDC 2013 keynote on June 10.
Ipad 3 rumored for March or April 2012
The second generation iPad is already available. It may be purchased online through Apple's website, in the Apple store, or at many electronics retail stores.
Apple invented it as a product inbetween the laptop and the iPhone.