New series purportedly planned after Golden Week double issue
It looks like Weekly Shonen Jump is about to go into another eventful period. Next week's issue 21 has a Nisekoi cover/color page with One Piece and Bleach absent. That might be the calm before the storm. The following is a Golden Week 22/23 double issue with the cover shared by the returning One Piece and Naruto Gaiden - The Seventh Hokage and the Scarlet Spring Month. After that, things get interesting.
Early looks at the upcoming issue purport that issues 24, 25 and 26 will debut new series, respectively the work of Takuma Yokota aka Yoko, author of Onani Master Kurosawa and Sentou Hakai Gakuen Dangerous; Ken Ogino (Hayate hime); and 9th Golden Future Cup winner Devily-man by Kentaro Fukuda.
As for what they're replacing... while the recent Black Clover has been well received, speculation based on their placement in the magazine/ranking suggest that Cyborg Roggy, Takujou no Ageha and Gakkyu Houtei (which also runs in the English Jump) might not be long for this world.