Immigration voice just reported :
Judge rules that the Regulation for extending the STEM OPT to 29 months (from 12 months) was done inappropriately and is thus invalid.
This ruling will become effective on February 12, 2016.
According to our analysis, someone working on F1-OPT-EAD will not be able to work after the 12th month period unless they get a work permit via other means.
Even though DHS can & probably will reintroduce this rule and go through the proper regulatory (lengthy) process, it should not be taken for granted that there will be any rule in place by February 12, 2016 authorizing any extension.