That's my hope right now. The way they made it sound was that he was in development a good deal but they hit a point where they couldn't cover all of them and he just happened to have the least work done at that point so he got the axe.
I would actually prefer they add more permanent Squadmates like Zaeed and Kasumi, but have them come attached to major DLC content like Shadow Broker or Overlord and so on rather than just their rinky dink personal missions. So you can acquire them earlier in the game and have them go on all the main game missions, but they have direct links and involvement in whatever the DLC content adds on.
While I certainly didn't mind having Nyreen and Aria as squadmates in Omega, it would have been cooler to have gotten another full time squadmate. As long as they don't pull another Javik I'm fine with DLC characters.