We've pushed out an update to Destinations (content buildid 1504990):

Touch Support

• Added Touch controller models to Avatar Hand choices for Touch users
• Updated Welcome panel and Tutorial for Touch users
• Use B and Y buttons to bring up the Destinations Menu
• Use A and X buttons to turn in 90 degree increments (only available in SteamVR Beta at this time)

UI Updates

• Menu icons, text, and layout updated for clarity
• Updated UI focus state for gamepad users - it is now clearer which panel will get gamepad input