It used to be worded like this, but not quite any longer. Now you get to keep a 'standard configuration' of licenses free forever, but if you have 100 instances of SQL Server Enterprise or whatever, they 'probably' won't all be free.

I have to use scare quotes because at that point it's a negotiation between you and Microsoft, and they have no obligation to grant you all those licenses, but they just might I suppose.

That's still about on par with wireless carrier definitions of "unlimited" -- not a good trend to set. Don't use the word free unless its truly cost-free.