Ansible Changes By Release

0.4 "Unchained" ------- in progress, ETA May 2012

custom facts provided by the setup module mean no dependency on Ruby, facter, or ohai
sudo improvements, now works much more smoothly
some support for reading some default settings from the ssh config file (key pairs, ports)
OS X support in progress for ansible on the host and clients (modules still TBA)
list of hosts in playbooks can be expressed as a YAML list in addition to ; delimited
tweaks to SELinux implementation for file module
first_available_file feature, see selective_file_sources.yml in examples/playbooks for info
fixes for yum module corner cases on EL5
--extra-vars="a=2 b=3" etc, now available to inject parameters into playbooks from CLI
file module now correctly returns the mode in octal
modules can no longer include stderr output (paramiko limitation from sudo)
'group_names' is now a variable made available to templates

0.3 "Baluchitherium" -- April 23, 2012

Packaging for Debian, Gentoo, and Arch
Improvements to the apt and yum modules
A virt module
SELinux support for the file module
Ability to use facts from other systems in templates (aka exported resources like support)
Built in Ansible facts so you don't need ohai, facter, or Ruby
tempdir selections that work with noexec mounted /tmp
templates happen locally, not remotely, so no dependency on python-jinja2 for remote computers
advanced inventory format in YAML allows more control over variables per host and per group
variables in playbooks can be structured/nested versus just a flat namespace
manpage upgrades (docs)
various bugfixes
can specify a default --user for playbooks rather than specifying it in the playbook file
able to specify ansible port in ansible host file (see docs)
refactored Inventory API to make it easier to write scripts using Ansible
looping capability for playbooks (with_items)
support for using sudo with a password
module arguments can be unicode
A local connection type, --connection=local, for use with cron or in kickstarts
better module debugging with -D
fetch module for pulling in files from remote hosts
command task supports creates=foo for idempotent semantics, won't run if file foo already exists

0.0.2 and 0.0.1