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Reducing GAM Contention with tempdb in SQL Server 2022

David Pless explains a performance benefit:

Over the past several SQL Server releases, Microsoft has improved the concurrency and performance of the tempdb database. In SQL Server 2022 we are addressing one of the last areas of contention by introducing concurrent global allocation map (GAM) and shared global allocation map (SGAM) updates which will give SQL Server 2022 a big improvement for scalability as tempdb is arguably the most important database in your environment.

Click through for the details. I can see this being a big performance improvement on really busy environments which make heavy use of temp tables.