It is impossible to tell how often apple will create a new ipad due to the fact that it just released it's first gen. I doubt thet will do like the iphone and make a new one every year, but with apple, you never know. Once the 2nd generation comes out, people will have a better understanding of how often they will make a new one and then Someone will be able to answer your question. Hope this helps!
The second and third-generation iPads have cameras. The first generation does not.No.
All iPads (the second and third generation models) have a camera. There would be no point to introducting an iPad without one.
No.
Launch day of the first generation, April 3, 2010.
The price of an iPad can range from $250 to $700, depending on the generation, storage, and condition of the iPad. The first generations are typically much cheaper compared to the second generation iPads. Unfortunately, there is not much variability on the cost on individual iPads across different stores. However, you may be able to find promotions that will let you take a discount off iPads.
It depends on which type of iPad it is. Second generation iPads are currently selling used for about $261, while 4th generation iPads are selling used starting at around $500, or almost full price.
The IPad 2 comes built in with a camera. The old IPads or first generation ones do not have a camera, so you can't take pictures with those. The news one does though.
Not yet, but it's highly suspected the next generation will have one, which should be announced very soon.
if you mean Wi-Fi, yes, iPads come with wi-fi. If you have a wi-fi network at home, you can connect your ipad to the internet.
No. No games come pre-installed.
If you mean a pre order then no.
Siri was released on 4s just to have something new and apple wasn't ready for a big update on all devices. In October 2012, it will be released for the New IPad (third-generation) with iOS6. It will also be available for the iPhone 4s and 5, as well as the fifth-generation iPod Touch.