The news most of us have been waiting for has finally been confirmed: Valve is readying the first expansion pack for the unanimously acclaimed Half-Life 2. Provisionally titled 'Aftermath', the new adventures of Gordon Freeman and his able sidekick Alyx is tentatively scheduled for a 'summer' release, according to PC Gamer UK, which has - incredibly - scooped the world with its cover feature on the hotly anticipated game in its May issue, out today.