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2.2 added touch events: Touchstart, touchmove, touchend, touchcancel have been integrated into the GWT event framework (#5148)
2.2 dropped support for java 1.5
Vaadin research, prototypes and custom components for M5
You might want to have a look at the Vaadin prototypes and components that Marlon has developed last winter, specifically for the new M5. It contains a demo for server-side push and a tricky prototype showing how the page editor could be implemented using Vaadin components injected in an iFrame only. Not that we want to change our page editor for 5.0, but he had to solve a number of problems related to embedding a Vaadin app.
Updated status of Vaadin issues related to earlier M5 development: http://jira.magnolia-cms.com/browse/UX-39
Prototype demonstrating drag and drop to iFrame: http://jira.magnolia-cms.com/browse/UX-40
Prototype demonstrating drag and drop from Desktop: http://jira.magnolia-cms.com/browse/UX-41
Prototype demonstrating server-side push support: http://jira.magnolia-cms.com/browse/UX-42
Vaadin Tree component implementing hybrid selection: http://jira.magnolia-cms.com/browse/UX-51
SVN:
- Prototypes: http://svn.magnolia-cms.com/svn/internal/sandbox/ux/
- More complex prototype demonstrating FLuiD UI and page editor with inline editing and dialogs: http://svn.magnolia-cms.com/svn/internal/sandbox/fluid/