Google just put out a survey for people participating in the Google Wave preview. The survey is long.. very long. But towards the end they ask many questions about mobile devices. If you want a mobile version or a Blackberry app, then I recommend completing the survey.
They posted it to twitter with the following link: http://bit.ly/u1N61
Just started up a blog about stuff, including Blackberry stuff at http://tbottle.com. You can also follow on twitter http://twitter.com/techbottle.