Yes that is true. Our University called us and said that the rule started from 8^th of April and it is for all. They also said that if we have job then its ok and send all the detail of our employer if not then we have to find job within in 3 months that is from April 8^th to June 8^th otherwise we will be out of status. And my friend this OPT rule is for all not only for STEM OPT since mine is not STEM OPT too.

Have a great day.