The FOMC wrong footed many (but not all, there was still about a third of economists calling for no taper, and plenty of ForexLive participants).
Hard to see anything but more strength from the EUR/USD over coming days. I posted the orderboard here (expect it to beef up once Europe and the UK start coming in). Support 1.3450/60 and 1.3380/90, Resistance above 1.3550 and 1.3700/15. looks like it has room to move to that above 1.37 resistance.
Daily candle chart – comments welcome, as always: