Being a tech blog, you are probably more interested in what's new. Most of the features announced with GA were already available on the portal as we rolled them out over the last couple of weeks. With GA, full documentation for those is now out.
Among the new features are:
Workbooks are replacing dashboards, providing for richer analytics and visualizations
New ML models to discover malicious SSH access, fuse identity, and access data to detect 35 unique threats that span multiple stages of the kill chain. Fusion is now on by default and managed through the UI