After waiting for almost a year, I have finally given up hope and brought a 2020 RX from a different Lexus dealer.
The main worrying factor was the lack of communication from my local dealer even after multiple emails and phone calls. Last update in October saying that delivery has been postponed again.
Thought of leaving the Lexus brand, but difficult to make that decision based on one dealers interaction.
Now to cancel my order and get the refund back. Not looking forward to service visits.
So I will be moving to the RX forum, hoping everyone get their cars as early as possible.