I put mine on the list last year to have the dash replaced. Check with dealer recently and they said Lexus didn't have any available and he didn't think Lexus would really ever replace all the dashes
My wife was kicking tires at one of the dealers 10 days ago. I told her to mention the dash recall, with the hope of getting on the list despite not having any cracks. The dealer did not inspect the dash but took down the VIN number. They said I qualified for the dash replacement for the "stickiness" issue. I thought it might take a year to get replaced, but I was just happy to be on the list.
5 days ago, the dealer called me and said the my new dash is in. It gets replaced today.
They did say the time frame can very based on the color of the dash.
Bottom line is, they are replacing them. Maybe try another dealer.