Though the game has not returned to Steam, the greeting on the Darkspore Forums has changed since this morning's message that Darkspore "is for almost all intents & purposes an abandoned title." That is gone entirely, and replaced by the following statement which reverses course and says they will continue to support the action/RPG:

7/1/13: Welcome to the Darkspore forums. Thanks for supporting the game. We recently resolved an issue that was causing some players to not be able to connect to the game. If you any encounter any other issues, please contact help.ea.com for customer support. We will continue to support Darkspore, so feel free to continue to discuss the game here. Thanks – Maxis.