While I concede the possibility that a reclassification of the bodies in the solar system may be appropriate, I think the whole definition of a planet, as well as "dwarf planet," was lame. I suspect this is a transitional arrangement.
I liked the original draft where any body revolving around the Sun with sufficient gravity to condense into a round object but NOT revolving around another, larger object would be considered a planet. A nice, straightforward, objective definition. That would be Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto, Eris and Sedna.
Mercury, Venus, Earth, Mars and Ceres would be terrestrial planets (rocky, with no to thin atmospheres). (Well, Venus has a thick atmosphere compared to Earth, but not to the gas giants.) Jupiter, Saturn, Uranus and Neptune would be gas giants. Pluto, Eris and Sedna would be plutons.