Dolores Catania says she still doesn't know who is joining her, Teresa Giudice and Melissa Gorga on "The Real Housewives of New Jersey" ... but if they're half as good as those who are gone, it sounds like she'll be happy.

We got the 'RHONJ' star Wednesday in New York City, and our photog asked her about the big cast shakeup ahead of season 15 of the Bravo series.

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Dolores tells us she's still in the dark on just who exactly is going to be filming alongside her ... which makes her excited and nervous.

Executive producer Andy Cohen has been open about wanting to bring in some new faces ... and Dolores tells us she doesn't question the boss' decisions.

Bravo announced the popular reality TV show is set to begin filming later this spring ... so we should find out who is joining the cast sooner than later.

In the meantime, Dolores has some advice for potential new castmates ... and we also asked her about the "Summer House" scandal.