As per 30JUL12 GDS timetable display, AerLingus plans to increase Trans-Atlantic service in Summer 2013 season starting 31MAR13, where it plans to introduce 1 additional weekly flight to Boston and 4 additional flights to Chicago.

Dublin – Boston Planned service increase from 11 weekly to 12 weekly
EI133 DUB1100 – 1300BOS 332 x24
EI137 DUB1415 – 1615BOS 330 D

EI136 BOS1825 – 0520+1DUB 330 D
EI138 BOS2050 – 0745+1DUB 332 x24

EI133/138 on Day 6 is the new flight, but not available for reservations at this moment

Dublin – Chicago Planned service increase from daily to 11 weekly
EI123 DUB1130 – 1345ORD 330 x246
EI125 DUB1250 – 1515ORD 330 D

EI122 ORD1550 – 0520+1DUB 330 x246
EI124 ORD1845 – 0815+1DUB 330 D

EI123/122 is not available for reservations at this moment