In an interview with Del Rey’s Suvudu blog, Aaron Allston talks about the current series, Fate of the Jedi (Have you finished Conviction yet?) and drops a few more details on his upcoming Wraith Squadron book.
Most of the action takes place in the same approximate period as Fate of the Jedi, but there are critical chapters that revisit the Wraiths in earlier years, starting just after they made the jump to become an Intelligence unit. The current-era story reunites some of the longtime Wraiths, introduces new ones, and even has second-generation Wraiths.
Head on over to Suvudu for more on the Wraiths, FOTJ, and the Jedi in general.