diTii.com | D' Technology Weblog

Now that the Atom 1.0 specification is pretty much final and waiting for approval we are going to see a lot of people moving from Atom 0.3 to Atom 1.0. Many people will automatically move to Atom 1.0 when they upgrade their weblog software, or when large weblog providers such as Blogger update their software. The rest of us, who are going to change our feeds manually are going to run into a number of differences between Atom 0.3 and Atom 1.0.
Source: sr-ultimate.com