The new hamlib 3.0 (released 2015-09-19) supports now 204 different types of transceivers and receivers. The list of supported radios has been therefore updated.
Users of the new Kenwood TS-590SG which became very popular should be warned, the TS-590SG and TS-590S are two entirely different radios. The firmware and software for one radio will not work on the other. Note also different model ID# - 231 is TS-590S and 237 is TS-590SG! More details here. (TNX Ian, G3NRW).