I checked the main summer 2012 timetable a couple of weeks ago and, though fairly full, did show some gaps that might be filled by the BUD, DNR and LCJ routes announced today with a little re-jigging - assuming none is more than 2 x weekly. I can find no details of timings or frequency yet - the routes go on sale tomorrow.
Lodz is interesting. It's one of Poland's largest cities but has a tiny airport in passenger number terms - around half a million passengers a year.
Ryanair already operates to five other Polish cities from BRS (Gdansk, Katowice, Poznan, Rzeszow and Wroclaw), and easyJet goes to Krakow.