That's correct. Jaheira and Minsc are the only ones we haven't gotten confirmation about regarding romance.
Because the game has only announced up to the end of chapter 1. :>
As far as I know, the only romance options that have been confirmed are Astarion, Lae'zel, Shadowheart, Gale, Wyll, Halsin, Karlach and Minthara. As for Jaheira and Minsc, these are also companions we can have but I don't think they will romanceable because of their well known history. We still don't know if we will be able to have lustful encounters in the city of Baldur's Gate with other npcs.
