Got the letter, with a nice Swiss logo.
They start out by saying how wonderful they've been to us, and that wondefulness will continue with the opening of new lounges in ZRH and GVA as of this winter. Then they mention the 25% bonus (of course without saying "reducing to"). Finally there's mention of the FRA pickup.
Whatever... I'll get my black card renewed no problem, it's my Air France card that I am worried about.