Gojitaaf on facebook has leaked the titles for upcoming episodes of Dragon Ball Super. The following image shows the titles and the translation for them are as follows:
Episode 50 – July 3: Son Goku vs Black!!
Episode 51 – July 10: Mai’s Feelings Across Time
Episode 52 – July 17: Gohan & Future Trunks
Episode 53 – July 31: Revealed! Black’s True Identity
Note that this reveal tells us that Dragon Ball Super will be on break on July 24.