Reportedly, they are not going to advertise for any post in near future. Nevertheless, as and when they wil advertise, you will get information of the same.
As regards merit do and punjab do is concerned, perhaps u have seen this thing in result of some post. Actually for every category of post, there is some quote for each province as well as for those standing at top positions. Merit means the person is on merit post, and do means that next person is also on merit, similarly punjab means that person is selected on punjab quota and do means the next number of person/s in front of whom do is mentioned, are on punjab quota, similarly there may be KPK, Sindh etc and a word do tagged in front of them.
Hope you understand it !
'Thee woh ik shakhs kay tasawar saay - abb woh ranayee khayal kahaan'