The IEEE/RSJ International Conference on Intelligent Robots and Systems, or IROS as it is commonly known, acceptence emails have been sent. From their email the number of submission was 1801(“the second highest in the history of IROS and a record for a robotics conference in Europe”) with 812 of those being accepted (i.e. 45%).
Compare this to IROS 2011 where acceptance was 32%. (790 papers have been accepted out of 2459 submitted). After googling this, I found more rates:
2008: 48.7% (661/1358)
oh and my my paper did get accepted :) more about that later…