Zach Whittaker over at ZDNet covers an IDC report. In it the 2013 9.7% forecast decline in PC shipments is advanced to 10.1%. Further, IDC's longer-term forecast turns quite grim: contracting 23% from 2012 levels by 2017. There is also a projection of future Windows tablet sales, and a statement that total Windows tablet sales for 2013 are expected to be 'less than 7.5 million units.