Managed to get a copy of Planetstrike from my local Games Workshop. When I went when it was released, alas it had sold out.
Planetstrike is a game of glorious invasions and desperate last stands set in the battle-ravaged universe of the 41st Millennium. Will you take the role of the defender, repelling the enemy’s vanguard with heavy weaponry and heavier fortifications? Or will you play the attacker, raining hellfire and damnation upon the foe before sending an army of your best troops to claim the smoking remains of his strongholds? This is truly a war on all fronts in which the enemy can appear at any time, from anywhere – especially from above!
This 80-page expansion book contains all of the rules and information you need to play games of Planetstrike; including: full rules for configuring your forces for planetary invasion, a full-colour hobby section on preparing your defences, and a comprehensive background section detailing some of the most infamous planetary assaults.
What was interesting, despite still been sold out on the Games Workshop website, my local store still had a bundle of Mines, Bombs and Booby Traps boxes (not selling well so much, as they tried to get me to buy a box).
Looking through Planetstrike, looks good and some nice pictures too.