Anyone has any info as to when production starts on this car? Any other info beside what ppl speculate and the otehr write ups on google?

 

Production? The existence of such thing is pure speculation not to mention production date...

Here's an excerpt from Wikipedia:
"Lexus is working on a high performance Lexus GS-F, the second model in its current F-Sport line-up, joining its younger sibling, the Lexus IS-F in the 2012 model year, along with the redesigned Lexus GS. The car, if approved, will be powered by the high performance V-10 to be slotted into the Lexus LF-A (GT-F) supercar, producing over 500 horsepower."

 

Search the forum. There are many threads speculating about GS-F.

For me, I won't even consider GS-F as a posibility until I see a prototype 4th generation GS out in testing or at show.

At this point, it's purely speculation. And there is a photoshoped photo of current GS infused with IS-F floating around in internet claiming to be an "artist interpretation" of what the GS-F is going to look like.

Trust me, it won't even look close if they ever decide to make GS-F.
And way the GS430/450h is selling extremly slowly compare to already slow selling GS350 compare to other Lexus models, I wouldn't set my hope high on this.