I don't buy the heat issue excuse. I mean, how hot does a car interior get with the windows up on a scorching day in Nevada? 140..150 degrees easy? LED's do not produce that much heat especially when used in conjunction with fiber optics where the light is simply spread from one source evenly.
If light bulbs caused dashboards to warp then we'd all have some jacked up gauge clusters to stare at all day.
Besides...we cannot forget the Dubai car. However that was working there seemed damn fine to me.
Me thinks this is more likely a cost cutting procedure.
We are the early orderers...we are GM's voluntary guinea pigs and their free source of feedback. How will we be thanked?