CF2 happened only once before on the 11th of August 2022 and it had Rhys, Emilio and Senan as featured heroes.
As of now (and again, it’s still over 1 month so subject to change, with the v53 game update in the meantime), my Magic Orb tells me that Narcisa and Winifred will be featured (and only these two). Yet, it’s inconsistent as the advertised hero (the one shown on the portal’s card in the list of summon portals) is Ogima, and the advertised hero is usually (always?) featured too.
So I have to say take this one with a grain of salt. And it starts in December so it’s technically not part of the November calendar but I like to give one more event to “connect” to the following month.