This was a highly requested feature: provide a Changelog for Piwik. What has changed since my version of Piwik and the latest one? The Piwik changelog is now available. It has one entry per new Piwik version and lists all changes that have been made to Piwik in each version.
How do I know when there is a new Piwik release?
The Piwik Changelog page lists all recent Piwik versions and the list of changes. The best way to keep track of all new versions is to subscribe to the Changelog Rss Feed.
Also, check it the Piwik Live Download Counter (refreshed every minute!).
We have also just opened Piwik Forums so you may want to have a look