On the PEAR blog today, they're asking for thoughts on some of the standards for the coming PEAR2 development environment:

Please read the following document and post your comments on the wiki using the discussion page. Comments are opened for a period of two weeks. It is very important that you comment as these standards will define PEAR2.

The standards can be found here and include everything from the base requirements and package approach down to specific package-related rules (for things like directory structure, class-to-file conventions and handling dependencies).