Still showing on my business plan.
It shows on my grandfathered business plan as well, but when I went through the actual upgrade process, at some point it keeps giving me an error. I have tried 10 times over the last couple weeks from multiple computers. The phones all say upgrade eligible, but do not actually allow you to go through the upgrade process.
@Dan - your article mentions no League Pass on grandfathered biz plans, I've had it on mine for years without any problems.