No offense to taxonomists, but this sort of thing just drives me nuts! We just had a genera change in dendrobatids a couple years ago, but here's another one. It seems somewhat robust, so maybe these changes will stay for a while...
Anyway, basically, we got a bunch of stuff lumped back into Dendrobates including Oophaga and Ranitomeya. Basically, most of the "old" names are back. Here's the paper for those interested:
PLoS Biology: Amazonian Amphibian Diversity Is Primarily Derived from Late Miocene Andean Lineages