I've recently released version 4 of SBJson. This is a new major version that is not backwards compatible. Since SBJson is widely bundled by other popular libraries I renamed all the classes & enums to make sure it can be used in conjunction with prior versions.
However, I'm not sure how to best handle this situation with CocoaPods. I contributed a 4.0.0 spec to the existing SBJson specs, but I suspect it will be impossible to install version 3.2 and 4.0.0 in the same project. Do I have to clone the 4.0.0 spec into a SBJson4 (notice extra major version number in name) spec as well?