Samsung announces that they will have an event on June 20 called "Premiere". And the announcement says that we will see some new devices from the Galaxy and Ativ brands. That means some new Galaxy phones and probably some tablets. And also some Windows 8 laptops and phones.
But i am totally sure we will not see the new Galaxy Note 3. Probably the rumored Galaxy S4 mini and Galaxy S4 Zoom and maybe the rumored Galaxy S4 mega. And that one I am personally highly interested in :)