It looks a long partnership between Sportsbet.io and Newcastle United but this can potentially be affected by policy changes in England. Their government have been considering possible strategic national changes entirely in sports and gambling marketing and advertisements, so they might let it be like now or tighten it more in upcoming years.
It may worth mentioning that the changes will go into effect in 2026/27 season and they will
not affect the coming season.
From theguardian.com:
Premier League clubs ban gambling sponsors on front of shirts from 2026-27