Hi,
It was part of a major revision of the geckos in Pachydactylus (sensu lato) by Bauer and Lamb. It was published in 2005 and is very well accepted. It affected Pachydactylus, Chondrodactylus, Colopus, Elasmodactylus, Kaokogecko, Palamtogecko and I may well have forgotten something

However, I expect some more changes within Chondrodactylus, but from what I've heard data isn't consistent yet.
If you want to learn more: Bauer, A. & T. Lamb (2005): Phylogenetic Relationships of southern African geckos in the Pachydactylus Group (Squamata: Gekkonidae). - Afr. J. Herp. 54 (2): 105-130.
Best,
Christian