Dan Kegel over the past couple days has been working on regression testing criteria.. The below quote is from the Wine wiki page that Dan has setup, and im posting it here in the hopes of getting the word out. As Wine is moving along very quickly now and the regression testing criteria will likely change from now until the final 1.0 release.

Wine is nearing its 1.0 release, and we need your help to make sure it's a good one!

Wine has been under heavy development in recent months, and some applications that used to work well no longer do. But we don't know which ones! Please help us find them, so we can fix them. Here's how:

1. First, make sure your machine runs glxgears properly

To run glxgears, open a terminal window and type 'glxgears'. If it crashes, you may need to update your graphics drivers. (This is mostly important when testing games, but it's also needed for some non-3D apps, e.g. Picasa).

2. Install the latest wine 1.0 release candidate

Make sure wine's notepad starts up ok and says "wine 1.0.0 rc1" (or whatever the version you thought you installed was) when you do Help / About Wine.