There are so many species being added continually to the nearly 2 million we know about that it's hard to keep up. One of the sources helpful in this endeavor is at LiveScience.com, where a page is devoted fulltime to the new creatures of the world. The Newfound Species page does not just include the charismatic vertebrates. The beetles, anemones (did you know an anemone lives in the Antarctic ice? No one did, until recently. Meet it here.), corals, spiders, and others are here along with the reptiles, mammals, fish, and birds. (Sorry, amphibians" you're here too. I don't know why I always leave you out.) Other recent entire here include an orchid, a scorpion, and the recognition of the second species of oncilla, a handsomely spotted Brazilian feline.
Another site is the species discovery page of Mongabay.com. Mongabay articles tend to lean more towards the vertebrates, though not entirely - meet the newest mantises here. There is some overlap, but there are plenty of new species to go around. The same is true for the New Species News page of ScienceDaily, which today features new sponges and bats. It also includes some related articles about topics like how to name and track endangered species.
Those sites, plus a Google Alert, keep me reasonably up to date. (Oh, don't forget to follow National Geographic news, including the Wild & Weird blog.)
There's a lot to catch up on....