I found something funny on the Microsoft Settlement webpages about OS/2 from 12/4/2001 :
"G. Microsoft should pay IBM to update OS/2 to be compliant with the latest version of the Windows API (e.g. Windows XP), so as to provide an alternative operating system to Windows. Because Microsoft's ability to manipulate the Windows API at will is what drove OS/2 out of the PC market last time, such manipulation should be regulated in the future for OS/2 to remain a reasonably interchangeable alternative. Thus. remedial steps A and B are necessary."
http://www.usdoj.gov/atr/...
Of course, it didn't happened.