Looks like you'll get to see jMaki in several places at JavaOne this year. Greg Murray and I have a session TS-6375 jMaki: Web 2.0 App Building Made Easy. We'll give an overview of jMaki and the architecture, talk about some of the features like Glue and the data models, go over the value proposition and give some cool demos.

If you want to get your hands dirty then the following labs will interest you. Schedule info

Also look for us at our booths at ComunityOne day, May 7 and in the Pavilion during JavaOne. See a demo, ask us questions or just stop by and say hi.