How long is expected life of the lights?

Interested in buying but wondering how long will it last? And what can be done if there are any “dead pixels”? Thanks

From the Kickstarter comments page

The LED matrix panels we use are rated for 100K hours of life, which comes out to about 11 years.
But to add to that, the LED’s themselves spend almost all of their time turned off. Each row of LED’s turns on for just a few milliseconds at a time, but much faster than your eye can see. This extends the life even further.