yes, but dont forget, that you also need to buy an extra battery, lens adapter, UV filter, memory card right away, that's about 120$ plus. And i've heard, that FZ20 has more noise, there was several forum topics about it, with picture comparing. so my choice is between FZ10 and FZ15.
FZ15 has a new engine, Venus 2, comparing to Venus 1 on FZ10, so its a little bit faster. BUT: it (FZ15) doesnt has a hot shoe and can't record video with sound.