Should I amend my tax return? The email Intuit sent seems to say yes. "Amend Turbo Tax Online" seems to say no.

When I log in to my account initially - it shows the refund of $2655 which TT calculated when I filed my return back in January. However, when click on "Amend Turbo Tax Online", it shows "Federal Refund $7,423" at the top of the page. Is that my refund due to the new tax law? Do I need to amend?