Not Pony Related exactly but looks like Faust is working on a new show
I feel bad that she's been kicked off projects and really never owned her own show. She's worked on existing IPs like DC superheroines and MLP or was a part of a show her husband headed but she never had her own original show.
It's also interesting to speculate where her next show might air. CN is phasing out its 2010 shows like Adventure Time and Regular Show, Disney is slowly developing new shows since I think right now the only popular ones are Star Vs. and Star Wars Rebels, and Nickelodeon is having a comeback with shows like Loud House.
It could be any really. CN is ending some of their more popular shows before and by 2018 and one thing I do like about CN is that they can go PG and explore some adult themes while still being enjoyable and watchable for kids. Plus it is nice to see a handful of CN shows still be animated traditionally, hand drawn whereas other networks have gone flash or Toon Boom almost entirely. Disney could make sense since it seems like they obviously want to air more shows to make Disney XD have be filled with their own property. Disney XD is very boy centric but Star Vs. which is kinda girl-centric really seems to be popular now so maybe they want another female-centered show from Faust. Lastly there's Nick which I never did grow up with but I do find Loud House to be quite endearing with its art style and cast of characters mostly comprised of females. I think they're trying to transition from their long time shows like Fairly Odd Parents and SpongeBob to focus on new shows to keep the network relevant.
Honestly, if I had to guess, it would be in this order. Nick<-CN<-Disney
I think Nick is more desperate for new shows and they could tap Lauren Faust to head a new show for them. And coincidentally Lauren Faust did actually appear on a Nick official podcast rather recently...
https://soundcloud.com/nickanimation/ep ... on-podcast 
Edit: oh wow, apparently she now has a child. I didn't know that. Granted, I guess it's not supposed to be made a big deal of but I guess that could explain why she's been rather silent lately. Plus because of this and now that I think about it, her tweet could have been a joke.

Congrats on the baby, though!