They've replaced the J41 on the NWI - EDI route with an E135, in addition to the existing E135 which serves the NWI - ABZ service. Additionally, the NWI - MAN route previously was a JS32, but is now a J41.
I admire their expansion, but I think they'll be stretched to the limit when BMI start their own ABZ - NWI service, using a E135, in direct competition to Eastern at significantly lower fares, WEF the end of March.