This is news from last month that no one covered, and I'm not 100% sure if it fits this thread, or if we should only talk about volume releases. Anyway, here is the source:
Anakubo's Pocket Monsters manga finished its serialization on CoroCoro Comic Special and will be moved to CoroCoro Online starting in April. If it's not a cancellation, and I didn't find anything saying the magazine is being cancelled, this opens a possibility for PokéSpe to get a second magazine, though it would be a bimonthly one.
With the SwSh arc getting more serious, we could have a second magazine to focus on the disaster side of the plot, or maybe the Rivals. Or who knows, a new arc based on the Isle of Armor, or maybe even LGPE since Yamamoto said it was still possible (technically, he only said "we didn't decide [on whether to do LGPE or not] yet", but that essentially means "it's not impossible", and that was when SwSh started releasing).
In fact, it's possible PM is being moved online for PokéSpe (just like it was apparently moved from CoroCoro Comic for the anime manga), since they apparently don't want two Pokémon manga in the same magazine, well, except for CoroCoro Ichiban! having both PokéSpe and the TCG manga, but I have no idea why that exception.
However, while that makes sense on surface, I'm not sure how likely that is. I've heard before that Anakubo's PM is more popular than PokéSpe in Japan, and while I don't know where I could possibly verify that, the Anakubo manga did beat PokéSpe for the CoroCoro Aniki slot, and is the only Pokémon manga being serialized in two magazines at once.
Alternatively, given the timing, it's possible CCS is just going to publish a New Pokémon Snap manga.
But if it's for PokéSpe, there's the question if Yamamoto can handle the work of doing two chapters at once, while still doing art corrections to previous arcs to have volume releases every 3 months. Not to mention whatever new content they would add to the old arcs' finales. It could explain his recent comments about volume 59's cover, which he started to redraw earlier when he previously would take too long to do it.
Once again, if PokéSpe gets the CCS slot, Yamamoto's work load would now be:
-One chapter for Ichiban! every month.
-One chapter for Comic Special every two months.
-Redraws for an entire volume every three months. Remember Yamamoto at one point mentioned having done reworks for over 90 pages (I don't remember the exact number) of volume 58 a few weeks before release.
For comparison sake let's use math, specifically the least common multiple, to see how much more work that is.
Currently, Yamamoto's workload every six months is six chapter and two volumes.
If PokéSpe starts running on CCS, Yamamoto's workload every six months becomes nine chapters and two volumes (or three if we count SwSh's volumes).
It doesn't seem that much bigger, but with how Yamamoto was struggling to put out monthly B2W2 chapters, and that was when he didn't have to work on volumes every 3 months, I'm worried it might be overwhelming. That said, with the pandemic forcing everyone to stay home, maybe Yamamoto would have more time to do it?
I don't know. Maybe there was something else that was affecting Yamamoto's work during that specific time that we don't know. Or maybe Sunday Webry was imposing some limit on the number of pages per chapter.
Regardless, CCS might be the last chance for PokéSpe to get a second physical magazine in the foreseeable future. Some people say Pokémon Fan could work because the magazine still exists, is now monthly, and Kusaka is now part of the magazine's editorial board (or was it directorial board?). However, I think it's possible that might never EVER happen because Kusaka is now on the magazine's board, and he authoring a manga for it might be seem as overstepping or preferential treatment, or something like that.
What do you think?