I guess I'll just state it explicitly: Mirai is what the 5th gen GS project became.
So, this is your 5th gen GS. There isn't a "Lexus version" planned.
Sorry to be the bearer of bad news.
I hope my emoji doesn't hurt your post, but this explains my frustration with product planners at Lexus and likely executive management. Anything not an easy to develop FWD vehicle or Akio's sports car vision, is backburnered or cancelled. Hell, where are the all wheel drive GA-K sedans? They definitely have to be coming as I don't see what would prevent them.
He couldn't cancel the LS because it is the flagship and starter of the brand. I don't see how this benefits them with the lower volume Mirai, using a Lexus. All of a sudden, this March 2016 rendering makes sense. This was the final design for the next gen GS and possibly an early look at future Lexus models. I wonder if the LS+ used this design because the GS would no longer have it? Argh!!
What gets me, is that this rendering was done in the early months of 2016 when no one had a lick of an idea what was going on, except those with likely Lexus leaking out details of the Next Generation design.
It was so easy for anyone else to write off this rendering as nothing, but my information came from the same source as the Camry rendering, which was very accurate (outside of T-shaped upper grille). The same artist responsible for this Kodansha rendering in December 2015, saw Camry clay buck itself or CAD drawing for sure. Meaning the GS-F rendering was accurate and we just will never see it.
December 2015 XV70 Hybrid Rendering
Actual XV70 Camry
They have spent the last 36 months reworking this car into the Mirai. I am so disappointed in this brand for the first time ever, not just annoyed, because their failure to execute the GS facelift properly is what resulted in abysmal 2016 sales.
The decision in the fall of 2016 to indefinitely halt the GS program, after they had already settled on a final design, judging by the date of launch targeted and some supplier information (JDM) was definitely influenced a large degree by active sales performance.
By October 2016, the 240/241B 2019 ES design was frozen and already being shown to Lexus personnel. The idea was to elevate the ES but I don't think it was ever engineered to replace the GS. Anything development wise post late 2016 for the ES, only marginally could have countered Lexus 300B cancellation.