Brief bit of standard stuff - the books production quality, artwork and paper quality are up to the standard we've now come to expect from the Deathwatch series.
This, unfortunately not for the first time, wasn't a title I was greatly looking forward to. It took me a while to actually buy the book as I just could not see how it would be any different from DW: The Achilus Assault. Even reading the descriptive text made it seem that these were two books with the same content and different names.
The best way to describe the difference is that where The Achilus Assault was all 'fluff' or background, The Jericho Reach is more like Edge of the Abyss was for Rogue trader. Yes, it covers the background of the 3 fronts (possibly focusing more on the 'now' than the history) but it also gives specific backgrounds for planets and characters that give more of a feel for gaming the various places. This included different squad and solo mode abilities for each area as well as different forces the Marines can call upon to help in missions (Admech Genator teams, etc). The section covering the 'Nid front also included more creatures - including the larger Tyranid creatures like the Harridian (massive flying creature) and Hierophant (Bio-titan). As well as stats for the new creatures only just announced by GW that will be in the upcoming Tyranid Codex.
The book finishes with an Adventure that puts the kill team on the surface of a planet that is in the process of being consumed by the Hive Fleet.
All in all, a good effort BUT the feeling that it could have been part of the earlier Achilus Assault book only warrants 3 stars from me, with a +1 for the extra 'Nid creatures.