Yep, got an email last week.
Warning about grass collecting near exhaust could catch on fire. Fix on it's way and they'll let us know when parts are available.

"What will Ford and your Dealer do?

To add additional protection against the accumulation of grass vegetation that may have gone undetected, Ford is developing additional shielding that will reduce the possibility for the concern to occur. We will write to you again when that additional shielding is available to be installed on your vehicle."