A new snapshot release of 1.2 (poco-1.2-20060816) is available from SourceForge.
This release is now feature complete and contains the proposed changes to namespaces and header file locations. If no severe issues will show up, the official 1.2 release will be available next week.
The changelog is here. And the updated reference documentation is here.
Not all platforms have been tested yet.
I have released another snapshot today: poco-1.2-20060817
This release should work on all supported platforms, and it also contains improvements to command line argument handling in Util::Application. See the changelog for details.
The documentation has been updated.