The new iPad.....why is it so 'hot'?

So I finally decided to crack opened the package on my lunch break to check it out. The screen is nice.....i've never used an iPad before, so I have nothing to go with other than it's nice. But, why is the device running so hot? I downloaded 1 app and the back of the device (bottom left side across from the speaker grill) is running really hot. Anyone else notice this?