*Yes, I know, there is no reason why, given common microbial DNA sources, other planets wouldn't produce newer life forms. It just leaves the possibility of a human-type life form that much more possible.
They probably won't look just like us. Everything on earth presumably got going from the same start, and we don't look like fish, or spiders, etc. However, it's comforting to know that even if they don't look like us, they should be edible. (And vice versa, of course.)
Think about this, though. If another line of life had arisen in the galaxy, it would most likely be subjected to the same bombardment/ejection as life on our planet. Some of those spores would have conceivably made their way here, if as the article states, our spores have made it to 10 billion other systems. If this were the case, we would probably see completely unrelated lines of life here on Earth. That we don't speaks to the possibility that life arose once in this part of the galaxy and that any life we might come across will be related to us in one way or another...