Per Delta:
"[When do these go into effect?]"
Delta SkyMiles Reserve and Reserve Business American Express Card Members will still have Unlimited Access to the Delta Sky Club under the current policy through January 31, 2025. Additionally, Delta SkyMiles Reserve and Reserve Business Card Members will continue to have Unlimited Access to American Express Centurion Lounges.Beginning February 1, 2025, Delta SkyMiles Reserve and Reserve Business American Express Card Members — both Basic and Additional — will receive 15 annual Club Visits until they make $75,000 in purchases and unlock Unlimited Access for the remainder of that year through January 31 of the next Medallion Year. Spend tracking starts in 2024 for the 2025 Medallion Year.

For example, if a Card Member reaches $75,000 in purchases on August 1, 2024, they would unlock Unlimited Delta Sky Club Access until January 31, 2026.
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