As CVG notes, Edge sources previously claimed the PS4 would be delayed in Europe until "early 2014." Sony has precedent here; the PS3 reached Europe in March 2007, having arrived in North America and Japan in November 2006. Europe was originally lined up for November 2006 too, but Sony delayed the PS3's arrival with two months to go.
At the PS4 reveal in February, Sony said the console was coming in "Holiday 2013," but refused to commit to which regions the window applied to. E3 would seem a good bet for Sony to get more specific about the PS4's arrival, especially depending on just how much Microsoft reveals next week.