Space Science Reviews, vol. 221 (yes, that SpaceSciRev) covers the Hera flight to Didymos:
Michel, P. Küppers, M. Fitzsimmons, A. et al. The Hera Space Mission in the Context of Small Near-Earth Asteroid Missions in the Past, Present and Future 70 s11214-025-01195-1
When SpaceSciRev covered other missions, you could consider them covered. Well covered. This should be no different… should. Unfortunately, it’s paywalled. The title, and Springer Publishing, are no pro bonos or charities. Perhaps you can find an institution with a blanket subscription to the journal. And yes, I checked for preprints, author copies, or ‘archived’ versions. None so far. From the abstract:
“… The first asteroid deflection test will thus be fully validated, enabling impact model extrapolations to other cases. Hera uses a unique architecture that includes for the first time a main spacecraft and two cubesats for deep space asteroid exploration. It takes place in the context of the golden age of asteroid exploration, with no less than 8 missions in development or already flying to asteroids and great successes of past missions, in particular the two recent asteroid sample return missions OSIRIS-REx by NASA and Hayabusa2 by JAXA. Up to now, all new asteroids visited by a spacecraft have generated great surprises…”
Context indeed. Can’t wait… til I can get my hands on this paper somehow, and til ~December 2026, when Hera arrives at Didymos. What a gift.