Make it easy to clear the queue and refresh "I'm feeling lucky" radio
You can remove individual songs from the queue. Sometimes, you just need to clear the entire queue. For example, there doesn't seem to be an easy way to refresh the playlist generated as "I'm feeling lucky radio." You have to first start/generate a different playlist before returning to "I'm feeling lucky radio." Google Play Music has a "refresh button" for "I'm feeling lucky radio" and a "Clear Queue" button.
Fix has been included in 4.1 (released on 11/15/2014)
Michal Vyšinský commented
It was possible before latest update by clicking album picture in left bottom corner. Now it opens some kind of overlay with album pictures - not useful.