Consider a few things before buying a DSLR. Consider the size, weight, lens you need to buy separate from the body, and cost. Consider whether you want to carry all that around with you.
If all you really want in a new camera is a better zoom, then you may want to stay with a p&s like the Canon G9 or the S5.
I went from a pocket sized power shot to a G5 to a Rebel to a 40D. I first wanted portability (Digital Elph). Then I wanted manual control with a hotshoe and some portability (G5). Then i wanted to be able to do night shots, exposure shots, experimental etc (Rebel) and then I wanted to do portraits, more experiments, larger prints (40D). From a piddling size to a camera in which I sometimes wonder how I'm going to carry it all day in a park.
Natural progression. LOL So... what do you want your camera to do and you'll know whether you want a very good P&S with a good optical zoom or if you want to get a dSLR with a telephoto/zoom lens on it.