I don't know why, but most tech companies are horrible at naming products.
At least with CPUs, I believe the the retail product names are deliberately confusing by design so that you as a consumer get confused (and mislead) into buying older models, whose sales tend to stagnate when newer models are released. (Newer models are of course, obscenely priced to differentiate them). A somewhat aware tech consumer what like to buy the latest affordable model they can. But if you can't easily identify the latest model or the next best one after it, they will often end up purchasing some older model with similar name.
This is too forgiving of intel in this case. It has a name. They just don't use it. "Sockets Supported: FCLGA2011". It's not like this is poorly named. It's not even true.
It's because naming products is done by the marketing dept. Sometimes they decide to increase a "major" version number for a product that is a rehash of a previous line just to confuse people and sell more units.
People believe "bigger number" = better, and marketing teams exploit that.