Today
How rotation is defined now
No blocks, no exceptions clauses — just the oldest four premier sets leaving each fall.
Modern rotation is mechanically simple: when the fall premier set releases, the four oldest premier sets in Standard rotate out simultaneously. Premier sets are the main expansions — supplemental products are not Standard-legal unless explicitly stated, which is what makes Foundations’ “Standard-legal supplemental set” status a deliberate exception rather than the rule.
The Foundations exception
Foundations (Nov 2024) is Standard-legal by design and exempt from the normal fall rotation — the announced window runs until at least 2029. When counting what leaves each fall, count premier sets only.