The news comes by way of Zynga's Q1 2013 earnings call, during which Zynga's Chief Operations Officer David Ko announced that Empires & Allies, Dream Zoo, and Zynga City on Tencent will join The Ville on Zynga's "closed games" list sometime in Q2. In other words, all three games will be shut down sometime before the end of June, when Q2 ends.
For now, the Empires & Allies Facebook page and game forums are still silent on the matter, and players can load the game as normal. Dream Zoo on mobile also appears to be running as normal, and there's no mention of the closure of that game on the Zynga forums either.
It's likely that at least Empires & Allies players will receive some sort of compensation package when that game closes, similar to how The Ville players can choose a free package of something in some other popular Zynga games. We'll stay on top of things and will bring you more concrete closure news (and dates) as soon as Zynga announces them. For now, you might hold off on spending any additional money in these games since you likely won't receive a refund when they shut down.
Are you sad to learn that Empires & Allies, Dream Zoo, and Zynga City will be shutting down? Let us know in the comments!