If you run the expenses.roo example, the new implementation for *SetEditor is utilizing:
Code:
@UiField
FlexTable table;
but the field is never used in the corresponding ui.xml file. After running the sample expenses.roo example you get the following error for all three main entities:

Field table has no corresponding field in template file for EmployeeSetEditor.ui.xml
Field table has no corresponding field in template file for ExpenseSetEditor.ui.xml
Field table has no corresponding field in template file for ReportSetEditor.ui.xml

I have also created the following issue in the issue tracker:
https://jira.springsource.org/browse/ROO-3258