Ah ha! I knew there was another book in the series after the “final book” and it’s more of an after action report involving the TOS crew than an actual story progression of Vanguard, but boy howdy is it a great look back at the entire situation that wound up costing lives and a significant amount of Federation hardware. Something that I enjoyed greatly about this series was how well it fit in with the movies and tv show that were happening in other parts of the universe with guest appearances by notable scientists and one off mentions of blowing things up that would play majorly into Star Trek movies set after this series of stories.
I’ve heard a rumor there’s more Vanguard to come, but I have no clue how they’re going to manage that. I look forward to the effort none the less!