Star Wars: Republic Commando: Hard Contact by Karen Traviss today.
I hope you enjoy it, all 4 of her Republic Commando novels were awesome, and the followup 501st was great but I wouldnt recommend reading that unless your ok with never getting a finished story.
When Lucas incorporated the Mandalorian culture into his Clone Wars cartoon series, it relegated everything she had written into a what if universe of star wars.
She decided that if that was the case she would stop and write no more so 501st which was book 1 of 3 and has some killer cliffhangers in it, is left open ended.
Thanks for the heads up. I heard about the kerfuffle when it happened, but I didn't realize 501st had cliffhangers. That's okay; I'm a Robotech fan. That makes me an old hand at unresolved cliffhangers.
I had heard JD
's report that someone else was going to step in and do one final book as well, but according to Wookieepedia that's not happening anymore.