Just picked up
Frontier Diaries yesterday. Six stories.
1. Battlefield Anywhere (from Macross Ace Vol. 005) - Michel and Klan on a covert mission.
2. Ebony and Ivory (from The Sneaker, Oct. 2010) - A Bobby story.
3. A Drunken Dance of Heaven and Hell [at least, I *think* that's what the title means...
] (from Macross Ace Vol. 006) - More about Isamu meeting Alto's father.
4. Examination Panic (from The Sneaker, Dec. 2010) - Totally unsure what this one's about, but I think it involves Sheryl and Ranka studying for final exams, and it definitely involves Grace nattering on about "Queen 1" and "Fairy 9."
5. Tear Drop (new story) - Not sure what this one's about, either.
6. Hot Plate (from Macross Ace Vol. 007) - Sheryl and Ranka in a yakisoba cooking competition.
I may be misreading, but I think the author's afterword is saying that, after the movie novelizations come out in March and April, he'll be done with Macross Frontier. (Of course, he's still working on Macross the Ride...but that's not really Frontier.) So it seems like the second movie really WILL be the end. For now, at least.