Equestria Girls 4 news and story status · 10:23am Feb 13th, 2016
Some info on Equestria Girls 4 appeared here.
So, it appears that "Legends of the Everfree" is now the official name. Also, Humane 6 goes camping. Curious. And hyped! 
I wonder what they might do in regards to Everfree Forest, if they do include it. I have some plans regarding Everfree Forest for Fallout: Equestria Girls myself, so there's a chance they might get screwed up. Sometimes it's good to be a slow poke - it's kinda still too soon for introducing the forest, though.
Also, I am afraid that I may not have Chapter 23 of Fallout: Equestria Girls ready within the usual 20 days limit I impose on myself. There is no hiatus, but you may be left waiting for longer, because of following reasons:
1) My work has been quite hectic lately, and I am sapped of creativity now.
2) My creative fuels for Fallout: Equestria Girls specifically are currently very low, unfortunately, so I re-installed Fallout: New Vegas to get some more. That, naturally, takes away time.
3) Chapter 23 will have a major event happen that needs to advance the main plot (finally), and thus, it simply cannot be made like previous filler chapters. It needs to be at least 10,000 words long, that's not negotiable. (Currently, it's 1,499 words long.) Better yet, 15,000 words long. If I pull more than 20,000 words, that's perfect.
4) I am planning to write a relatively short (but still multi-chaptered) romantic story with Sci-Twi/Flash pairing, because I am feeling disappointed that this pairing is not given more attention. Naturally, it demands my mental resources too. And there's another project in the works, but it has to remain secret for now... and it needs mental resources, too. Which I currently lack.
5) XCOM 2. I bleeping love this game. Blame Firaxis for me not writing the story 'coz I am purging xeno scum from Earth.
Well, that's it. Stay tuned! I may be slowed, but I won't stop! 
Give yourself some time, I can wait... while I'm playing a simple free mobile game that has probably the most epic yet difficult battle that's reminiscent of the Kefka battle with epic music to boot!
Methinks they'll revive another villain from the older Gens. There was a trio of witches from the very first mlp movie.
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I am not familiar with older generations, so no promises on that front.