Looks like 115,000 Xbones sold in April from NPD. Twitter leaks seem to imply PS4 being nearly 2:1 again for the month. More detail will probably leak out in the next few days.
March (5 weeks) - 311,000 units sold -->62,200 Xbones per week
April (4 weeks) - 115,000 units sold -->28,750 Xbones per week
Xbox 360 apparently had 71,000 sales.
http://news.xbox.com/2014/05/xbox-one-april-npd
With Microsoft announcing the Kinect-less SKU this month but not selling it until June, could we see the 360 outselling the Xbone for May?
Additional context - Xbox 360 historical April sales numbers:
April 2006 - 295K
April 2007 - 174K
April 2008 - 188K
April 2009 - 175K
April 2010 - 185K
April 2011 - 297K
April 2012 - 236K
April 2013 - 130K