GWT - Is it the future of web programming?

This question came to my mind when I saw (finally after couple of days waiting for my Wave account to be ready) the new Google Wave web 2.0 application which is written using GWT technology. I have to say that I'm impressed. I haven't got the chance to fully estimate functionality, but it's definitely a sexy RIA application. Will it give us the missing piece we have always looked for and finally we can say that GWT has a real father (Google)?