American Airlines Executive Platinum (and Concierge Key) members have been getting upgrades on Alaska Airlines for the past three months. This benefit is being extended to Platinum Pro members as well.
Platinum Pro (“75K” elite tier) becomes oneworld emerald on Wednesday, June 30th. That means more free checked bags, and better priority check-in as well as first class lounge access on international trips where those lounges have re-opened. Separate from oneworld benefits, and unique to the American partnership with Alaska, it will also mean upgrades on Alaska starting in ‘a few days’.