If you hop over to Apple's CarPlay site, you'll notice that Toyota is listed among the partner car manufacturers. It's been there for years, in fact.
There's just one problem. Toyota has never produced a CarPlay compatible vehicle. (Nor Android Auto, for that matter.) Instead, the auto maker has stuck steadfastly to its own Entune platform for app integration.
That's all finally changing with the 2019 Toyota Avalon and and select 2019 Lexus vehicles. Next year's Avalon, with Entune 3.0, will finally support CarPlay, as will select Lexus vehicles with the Enform 2.0 platform. The announcement was part of an overall reveal of the 2019 Avalon at the North American International Auto Show in Detroit.