A lot of people wanted to know what "Free" harbors meant as Phoenician Heritage, like if it means immediately or after harbors are unlocked, and if it means maintenance free as well as hammer free. And the answer to both is yes. You get them turn 1, and they're maintenance free. They actually read "Harbor (FREE)" so it's pretty apparent. 
Just thought I'd point that out for those who don't have the game yet since I haven't seen it brought up anywhere else (could have missed it though; only been up for an hour since launch).

Just thought I'd point that out for those who don't have the game yet since I haven't seen it brought up anywhere else (could have missed it though; only been up for an hour since launch).