Shuttle bus service to/from Manhattan: this will operate between Jay Street/Metro tech and 57th Street/Lexington Avenue via the Manhattan Bridge. No info yet on hours of operation/schedules.
Subway service into Brooklyn: There will be subway service between some local stations and destinations within Brooklyn. 4 trains will run between Borough Hall and New Lots Avenue, making all local stops. To get to Flatbush, change to a 5 train at Atlantic Avenue/Barclays Center. A trains will run between Jay Street and Lefferts Boulevard. F trains will run between Jay Street and Avenue X. R trains will run between Jay Street and 95th Street. There will be no service at Clark Street, Court Street, High Street, or York Street, and no G train service.
Source: Brooklyn Heights Blog
http://brooklynheightsblog.com/archives/50847
