Originally Posted by
corporate-wage-slave
That's a longstanding quirk, the newer aircraft types aren't specifically mentioned in MMB. However if you look at thebasource.net then you can work it out. Or if you give the dates someone here will check for you. BA195 on 28 Oct is a 787-9 at the moment.
I'm sure all the old hands know this, but I couldn't get the above website, the address is thebasource.com