To be considered connected via railroad being on island, you need sea connection. You need simple lighthouse, or like harbour or maybe Seaport?The new change brings back an automatic bonus for railroad connections, but it is substantially weaker
I also didnt noticed any info about the need for coal for Seaports, im kinda hopping, it wont be needed, since the building is significantly weaker now.
Im obviously missing something, cause im pretty sure that doesnt mean 560 unitsAnd this is what you get late game.
But yea, late game would be indeed strong. Thou, you have to somehow live to endgame and on diety, its not exacly easy.