Firstly, congratulations on releasing another beta version. CSS3Pie has made great progress.
My question is when will it be considered ready for release as v1.0?
I notice in the release notes, you have a comment at the end:
After this beta 4 release, the priority for development is introducing proper support for missing CSS3 features in IE9, notably linear-gradient and border-image.
If the current features are complete enough that you're moving on to adding new features, then I would have said that it implies that the 'beta' tag is ready to be dropped.
Otherwise, at what point would it be ready?
Anyway, just a thought. In reality, it doesn't actually make much difference (except to those unfortunates who have to work under ultra retentive corporate policies that refuse to implement anything marked as beta). But if nothing else, I'd be interested in learning more about the release plan for Pie.