Certainly Jesus is to be our focus.
However, Holy Spirit does give dreams to some prophets as He does to people of all roles. He's not exactly
limited,
you know.
I believe they are at least given for prayer. But also for preparing one's heart and mind; changing one's ways and/or location; being more in tune with what God's about to do, etc.
No Scripture is clear, no dreams. Even though it says in Joel that old men will dream dreams, the implication is that they are of no account.