The new rule is for the students with serious economic hardship due to the recent earthquake in Nepal. If you have presented such a case (hardship) to you DSO then with your DSO recommendation you can apply for I-766 & reduce course (6 cr for Undergraduate & 3 cr for graduate level).
The notice also mentions that even if you have already applied/received aproved TPS & TPS - EAD, you still have to demonstrate economic hardship (before you can work) so that you can maintain your F - status.

mitra, in this case tyo DSO recommendation letter le nai sabai kura ho, play safe.