According to the game’s blog, no new content will be created for the game from this point on. There are a few new pieces of content that will be coming soon but after they release, the game will stay as is. However, the team assures players that they will not be shutting the game down or taking away any content that already exists in the game. When asked why there was no more content being created for the game, the team responded by saying
“Because creating top-tier content, as we have been for the last year and a half, is very expensive—too expensive to maintain for long, as it turns out. We can no longer afford to keep creating it. AOEO already has a very large amount of high-quality, hand-crafted entertainment, and adding more is no longer cost-effective.”
This was an ambitious project for Microsoft, who wanted to break into the free-to-play market. The game was fairly well received but it seems that they aren’t experiencing the kind of growth they needed to sustain the model.