This was first revealed via a Japanese web publication, speculating that it may be a JDM-only edition limited to 500 cars and that there will be 3 variants:Kett":z6vq04t3 said:https://www.pistonheads.com/news/ph-japanesecars/fully-tuned-gr-yaris-lined-up-for-tokyo-show/45150
Web limited SCOOP! Limited to 500 GRMN Yaris debuted at Tokyo Auto Salon
An excerpt via Google Translator:
"GR Yaris RZ The GRMN Yaris, which is tailored based on high performance, is a complete model in which a professional driver participated in the development. Three types are available and a total of 500 units will be sold for a limited time. There are three types in the lineup: base grade (standard car), circuit package pursuing on-road performance, and rally package with extreme running performance on rough roads. Each circuit and rally package is a model developed with a focus on shortening the time in motor sports."
Looks like more details have been revealed, so look forward to seeing what exactly this is when it is announced at Tokyo Auto Salon on 14th January.