Those changes to AbstractCellTable were just committed within the last couple of weeks and has been going under some pretty heavy changes. They usually like to let things like that bake for a while before actually releasing them.
That being said, there is no reason to not use a version of trunk. Google does it for all their products and Ray Ryan said in this year's Fireside Chat that he would develop from a version of trunk and not wait for official releases. We're doing just that where I work, I'm in the process of upgrading my company to a pull of trunk from last week mainly for the exact reasons you specify the table and header builders. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/J2QDK2xoJUUJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.