In an interview with VideoGamer Dan Ayoub had this to say about Halo Reach and ODST.
“What I can tell you is probably the biggest question we get from people is, what about ODST and Reach. What I can say is it’s certainly not in our development timeline or planning right now but we’ve heard that question so much that it has seeped into our collective subconscious. I think enough people have asked about it that we are thinking about it.”
Halo Reach and ODST are not included in the upcoming Halo : Master Chief Collection set to be released November 11th will include:
Halo :Combat Evolved Anniversary
343 have said they did not include ODST and Reach so they could focus on the Master Chief centric games to tie into Halo 5’s release next year and to coincide with the anniversary.
So come on fans out there don’t give up hope yet, you’re getting there, maybe if you keep these mind games up you might end up with a rampant 343 Industries and not just a Cortana.