January 2020 update -- Use this link someone else posted: https://turbotax.intuit.com/personal-taxes/online/
Make sure you're already logged into the "free IRS version" then click the link. Should prompt you to answer how you did your taxes last year, which is where you'll click "turbo tax" and it should direct you back to the IRS version then ask if you want to switch to the "free simple version" - this worked for me so hopefully it works for everyone else duped into thinking the IRS one is the one they want.
P.S. to Turbo Tax marketing - please switch your wording because if you offer a Free IRS product AND a Free Simple Return product, people will get confused.
