Gladiator 0.5.2, Glimmer DSL for SWT 220.127.116.11, and Glimmer DSL for Opal 0.5.1 have been released. You can check their change logs (under CHANGELOG.md in each project) to find out what the changes were.
Gladiator now has a Scratchpad to run arbitrary Ruby code (including instrumenting Gladiator itself or any Glimmer app run from Gladiator for that matter) as well as a new Open Project menu item.
Glimmer DSL for SWT has got two new custom widgets: radio_group and checkbox_group, which are just variations on radio (SWT button(:radio)) and checkbox (SWT button(:check)) to enable dynamically spawning radios and checkboxes via data-binding to model properties.
Glimmer DSL for Opal has got the same new widgets from Glimmer DSL for SWT as well as a number of new samples such as Hello, Radio!, Hello, Checkbox!, and Hello, Group!