What has changed?

[⎛Double Double⎞]

Has a lot changed since launch? have they added much to the game?

[Steph(✿◠‿◠)]

Do you mean since the official release (July 4th, 2012)? Then, I would say quite a lot!

I found a wiki page[endlessspace.wikia.com] that sums up pretty well what has been added and in which version: several patches and free add-ons.

This means: a new faction, new heroes, techs and buildings, new mechanics, interactive random events, exploration rewards, some more balancing, AI improvements, multiplayer improvements, bug fixes, new tracks, more lore, new artwork and I'm probably forgetting many other important things! And, we're working on a paid expansion at the moment, but we haven't announced anything yet.

I'll let others give their opinion on the game: if it has improved or not, as I am quite biased. :)

[⎛Double Double⎞]

A Paid expansion? Can you at least tell me if its going to be a standalone expansion?

[Steph(✿◠‿◠)]

You'll need Endless Space to play the expansion.