It will happen soon, both JFK and LaGuardia is going to have rail-link in the near future.. But I think JFK will come sooner...JFK Air Train runs on Mono-rail. The existing rail tunnels under the East River is strictly for the Subway.. They do not have the room to add the mono-rail into them.. What the city will have to do is dig a new tunnel just for the mono-rail. When that is finished, JFK will be rail connected to the city, Downtown to be exact. I have heard by 2015, but I think 2020 is more likely..