News flash! The authors of the Slayer books are running out of races to slay! With Orcs and soon Humans out of the way, not much else remains for the dwarf and his human ally to kill. Maybe after the long awaited Elf-Slayer we can finally hope that the series are put down and to rest.
Also! Seeing as people sadly judge books by covers most of the time (and I'm getting paid for doing this);
Rebel Winter - June '07

Vostroyans in the snow! And orks! And treason? This might be a complicated book for some..
Fulgrim - June '07

The "tragic" fall of purple armoured marines, who become pink armoured marines led by a schizophrenic bishi boy!
Star of Damocles - August '07

The second book about a family of Rogue Traders in the Damocles Gulf sector. Meaning: Tau..
Dark Apostle - September '07

Chaos marines are being assholes for mysterious reasons this time round. Though daemons are probably involved again.
the Imperial Munitorum Manual - October '07

"In the style of a military weapons catalogue, it features over sixty entries on weapons, kit and equipment utilised by the imperial guard, as well as details about the organisation that provides it, the Departmento Munitorum."
Descent of Angels - October '07

A Horus Heresy book about the Dark Angels and their big adventure of not being involved in the Heresy in any way at all.
Empire in Flames - February '08

The first of possibly many tie-ins with the upcoming Warhammer on-line game.