This is nothing new. Every manufacturer has a note about the number and/or type of acceptable dead/bright pixels on an LCD though they vary from manufacturer to manufacturer. In some cases, a display can have dozens of dead pixels as long as they aren't clustered together, where others will allow several dead pixels but no bright pixels.
This is nothing new and has been Nintendo's policy ever since the Gameboy Advance was released. But, if you're nice when you call support, you may be able to get it replaced, or of course, you could just swap the unit at the store. The same goes for any other LCD you buy.