we would like to officially announce that this will be the [last] version labeled Alpha. We have already updated the versioning scheme (this version being 0.27.0) and we will progressively stop using the Alpha label altogether up to the next release, which will be Release 28.
Excellent. Whenever I told people about 0 A.D., I felt like I should add that it's not actually an Alpha, especially with their webpage saying in various places basically "no, don't look at us yet, we're not ready yet".
If they continue adding content, I do think that's awesome, but what's there is already plenty solid.