That wouldn't have happened yet. In my head, I have a loose projection of when I figure it would, it's something like 2013-2015

In any case, I'm not saying it's fact, just loose speculation

I don't think waiting until people decide they can tolerate 16:10 or 16:9 would be a good strategy. Thinkpads were some of the last laptops to offer 4:3 models, and people were buying them for that reason. They already have premium prices and a reputation for quality; I think if anybody was going to do this, Lenovo would already be doing it.