There are many many changes since 2.2 including:
A new program has been added to the Freeciv suite: 'freeciv-modpack'.
This makes it easier to download and install add-ons ('modpacks':
rulesets, tilesets, etc) to the right place; you can enter a URL,
choose an add-on from the list, and the tool will install it to the
correct place for this version of Freeciv to use it.
See http://freeciv.wikia.com/wiki/NEWS
We also include a security fix.
