Agreed, tomorrow's release will most like be single day tickets, express as they've usually done. And then there'll be the usual worry over nothing about if they're going to release FFP's or not before the FFP's are released later as usual.
That said, it does feel like there's a legitimate rumor that FFP's will no longer have the option for Express, so if there's a date or two that you truly want Express, it probably wouldn't hurt to jump on purchasing single night express once it's for sale.