Thanks a lot for the new release - it starts to look really good.

1.0.0-pre.9 seems to break (SingleSelectionController) md-radio as illustrated below:

• radio are not selected on click
• navigation through radio with keyboard arrows do not select the active radio

non working example (1.0.0-pre.9)

working example (1.0.0-pre.8)
replace pre.9 by pre.8 in playground

link to playground