Yeah, if you're playing CPU-intensive games it did get hot before, but now after the update it gets hot when doing 'everyday stuff' like web browsing. Well, it gets warm... if you use an app that really throttles the CPU then yeah, it gets hotter, like geoff said.
Dale_M... well, we're not trying to sound like experts, but should you? CPUs aren't always running at full speed, and that's the whole point of the system and Samsung's implementation (or any manufacturer's, for that matter). When needed, the CPU slows down or speeds up, uses one or more cores at the same time for the same process, uses one for one thing and another for a different task, etc. This is even stated clearly in the "Power Saving Mode" setting in the tablet. If your 'theory' were true, battery would last the same no matter if you were surfing the web or playing a graphic-intensive game.