Sonic Frontiers' Second Free Content Update Celebrates Sonic's Birthday, Arrives Today - Game Informer

The update is called Sonic's Birthday Bash and will add several features including New Game Plus.

Sonic News, Page 4

Sonic Frontiers, Sonic Wiki Zone

TOSSING HIS BIRTHDAY PARTY

Sonic News Nintendo Life

Sonic Frontiers' Free Update Sonic's Birthday Bash is Out Now - QooApp News

Sonic Frontiers Celebrates Sonic's Birthday With a Free Update

Sega drops free Sonic Frontiers Xbox update with New Game + and more

Sonic the Hedgehog/Miscellaneous, Sonic Wiki Zone

Sonic News Nintendo Life

Sonic Generations, Sonic Wiki Zone

2023 – Page 5 – Sonic City Sonic the Hedgehog News, Media, & Community

Sonic Frontiers, Sonic Wiki Zone

Sonic Frontiers Update Gives Sonic Spin Dash Move, New Game+ Mode - IGN