There. I said it! It's just not. It's a dwarf planet.
Consider this: If Pluto were a planet, then so would Eris be a planet, which has almost the same diameter and more mass. And both these have a smaller diameter and mass than our moon, less than 25% the mass and less than 70% the diameter.
More: Nasa is going to make an 'amazing' announcement on Thursday (Thursday 8 October 2015)
The article lists a couple of amazing discoveries they've already made on Pluto - weather, hazes, active geology. So what could be even more amazing? Signs of life?