aws golang sdk's have been around for a while and I've found several other which are well tested and maintained such as https://github.com/goamz/goamz. It's awesome that aws finally decide which library they're officially adopting but I found frustrating that the library is poorly tested and it will take while until it becomes the official. It'd be great if all the other sdk's contributors start working on the same project.
But anyone can fork any project on github willy-nilly, for whatever reason they want, it's not something that's really under the control of original project.