Eurogamer has word from Valve Software on plans for a retail release of Half-Life 2: Aftermath, the upcoming expansion for their first-person shooter sequel. The report says the add-on is due in September, and they are finalizing a deal with a new publisher for retail distribution. Last month it was announced that as part of a legal settlement, Vivendi Universal Games will cease distributing the retail versions of Valve's games as of August 31 of this year (story), leaving open the possibility that the Aftermath add-on would only be available digitally via Steam. Valve partnered with Activision for the retail release of Day of Defeat (story) in what was termed at the time as a multi-title deal, but there isn't a clear indication who Valve is working with at this point.