User blog comment:Blueyhale/Should some Battle Reports from White Dwarfs be considered cannon?/@comment-86.156.147.216-20150502223428

not really canon i'd say...abaddon was killed in one battle report by the eldar. I would only consider articles, codex, rule books, black library etc canon but lets face it, GWS et al add new things almost weekly so canon is a very fluid thing, especially in the minor points....who knew before 'Vengeful Spirit' that all Primarchs had eidetic memories for examples