User blog comment:Filheinz/Clarifications regarding the Icon Event/@comment-3446451-20130504155923

1. You won't know immediately when you've unlocked one, but withing a day or two, another icon without the little timer in the corner should appear.

2. I don't believe your progress is affected by switching until you actually win a game with whatever you switched to.

3. Unless you get the 'upgraded' version after the event, you just get the same icon without the timer at the bottom.

4. dunno about ending timer