It looks like Sonic Frontiers will have DLC, based on this promo

Sega selling add-on content isn't too surprising, but we may have our first soft confirmation of Sonic Frontiers DLC.

Sonic Frontiers Gets New Promotional Artwork - Gameranx

Microsoft floated the idea of a Sega-branded Xbox Series X

Sonic Frontiers Release Date Possibly Leaked By Promo Materials - PlayStation Universe

Sonic Frontiers' Sends You Into “The Final Horizon” – COMICON

NEW Switch Sense: A Cyberpunk Ghost Story (HK, ENGLISH/ Chinese). Switch Ninja Gaiden Master Collection 1 + 2 +3 (HK, ENGLISH/ Chinese/ Spanish). NEW

NEW PS5 Sonic Frontiers (HK, Chinese/ English/ Japanese) + DLC

Sonic Central 2023: Celebrate Sonic's Birthday With New Releases and Updates - Xbox Wire

2023 Sonic Frontiers Offering Free Sonic Adventure 2 DLC To Newsletter Subscribers you through

SA2 Sonic Frontiers shoes: what they look like, and where to find them

Sonic Frontiers Gets Free DLC and a Big Sale

Sonic Frontiers Archives

Nintendo Switch Sonic Frontiers + DLC + Name tag Korean Package PRE-ORDER

Sonic Frontiers Is Offering Free DLC Under One Condition