This weeks Weekly Shounen Jump was a double-issue, and it'll be golden week in Japan next week. To put it simple, we'll have to wait 2 weeks for Naruto 446, OP 541 and so on...
Also, D. Gray-man is going on hiatus after this weeks chapter, read and discuss about the reasons here.
But there are also good news, 2 new series are awaiting us after the break, first
Medaka by Nishio Ishin & Akira Akatsuki and one week later:
Akaboshi - Ibun Suikoden by Amano Yôichi.