I'll avoid the opinions, speculative rumours and bait, and just answer your question.
The latest thing we've heard from him is that he's preparing a new series for a digital manga thing. It's a mobile app, so I haven't seen any of the new series really make it anywhere in non-japan.
I don't think he ever scream out of frustration, instead he sit in a bath and, you know what, just read it yourself
https://mangadex.org/chapter/112249/1 (this is the aftermath of him screw up)
Also, he isn't frustrate because he can't choose a girl, he's frustrate because he pick wrong (in his defense, it's a 50/50 and he picking the most logical one) and hurting Chihiro with that decision
4chan is wrong. It was announced on the official Weekly Shounen Sunday website in Japan.