Anyone impacted by this should submit their concerns at the page/link that "mesquitebean" had sent out. That way Turbotax/Intuit will know how widespread the issue. Sadly, many Turbotax filers may not even know that they're impacted - they'll be in for a rude shock if they get audited by the IRS and then try to use the Audit Defense that they'd purchased!
If you want to contact Intuit with your concern, you can use the online form to contact a liaison in the office of the President of Intuit. They say they will get back to you in 1 business day.
The contact form and a box for explanation of your issue is here:
https://www.intuit.com/company/contact/office-of-the-president/
