The present third-generation IS initially went on sale in 2013, and got a mid-life refresh in 2016. Provided the three-year pattern for model life-cycles prior to updates, we might see the all-new IS exposed as quickly as 2019.
It appears like the present generation of this model will continue for another 2 or 3 years, according to the most recent reports. Presented in 2009, this model appears rather old compared to other mid-size SUV, in spite of couple of updates up until now. The Japanese maker is presently concentrated on automobile and crossovers, so the 2020 Lexus GX 460 most likely will not feature larger changes.