Asalam U Alaikum all dear aspirants and seniors.
I want to appear in 2020 Because of lower age. I am a Student of BSCS. I am little bit confused to start css preparation now because of some future news like,
1) Css In urdu language.
2) Three Cluster program.
3) Change of syllabus.
Please suggest me should i wait for the cluster based css exams to be implemented, css in urdu language , syllabus changed or i should start preparation.
Please also suggest me if i choose my optional now or 5 to 6 months before css exam.
Please help me seniors.
Thanks in advance.

Same here. Also planning to appear in 2020 but i am confused about the new rules. When will these rules apply?

No one can tell you for sure if these will be implemented in the year 2020.
What you can do for now is make sure you stay in touch with world affairs and pakistan affairs. Practice writing essays on various topics and get them checked by seniors on this forum. Whatever happens, these things wont change, thats for sure.
P.S. I believe they'll make language an option rather than switching to Urdu for good. So you'll still be able to do it in English.

This is totally unfair. Knowledge is not determined by the education or degree.. And CSS was the best way to prove it. We've seen many students fail in CSS in the subjects they had mastered in. So it was totally dependent upon aptitude and merit based preparation of the students. And then, after training like CTP and STP , there left no room for disqualification of the officers for the suitable jobs. But as from 2020, the cluster based reforms are going to be introduced, they will produce no more than nuts in civil services. It clearly means that civil services will be based on distinct degrees rather than equality for all students. As a result students will lack interest in civil services too and move abroad, get settled there and serve other countries because there's injustice in our own country for us. We students are totally against cluster based reforms and government should think before applying these reforms in civil services
Students please start a campaign and spread this message on social media so that government does justice. Remember, serving Pakistan is the right of all the Pakistanis despite their "degrees"

I don't know who comes up with this stupid idea. Instead of trying to introduce reforms which will free civil services from political interference and corruption, these people are trying to destroy what remains of it.
What is the purpose of this really?
Current system of exam is best as it provides equal opportunity to all Pakistanis, if something needs to change it's the system of institutions not the system of exam.

I don't think the cluster based system shall be based on degrees. They shall be more structured on your choices. If you pick a particular group of subjects you shall be eligible for a particular service to work in. I think that's pretty fair. I didn't get how previously someone could pass the CSS exam by opting for science subjects (even if they don't have a degree in it) and yet still be appointed to a highly technical and specialized field like Customs or Audit and Accounts. These are not subjects you can "learn on the job" or cover through the rather short training courses. Some fields are more general though and they don't require any specific background like Administration and foreign affairs and I do believe a "general cluster" shall be made for these so anyone can opt for them but allotment to the other more technical groups shall be based on your optional choices NOT your degrees (though of course you do tend to chose subjects you've studied so it boils down to the same thing). It shall definitely help in implementing the principle of the right person for the right job.

To pick right person for the right job, we have nts, pts, ots, provincial psc, fpsc mcqs based test. No need to ruin css exam. If they still think that there is a group which require person with specific knowledge, just remove it from css groups because most of the groups are general anyways and don't require specific education. Remove those 1 or 2 groups and place any other group here in civil service like intelligence (IB + FIA) or any other group which requires general exam.
Plus people who are allocated in audits and accounts or in customs would better know about the nature of job that they require persons with accounts background or not. I really doubt that they would.

I think they do plan on removing the more technical groups or at the very least allowing lateral entry for more trained professionals (which would then actually be on degrees and/or professional background basis). I think that would be worse since it fosters a feeling of "us" and "them". People who go through the full CSS process shall resent those that can get jobs on a higher pay scale which just one exam. It would feel like they would be cutting in line to get ahead. And as for people not requiring a background in accounts to serve the accounts group well, a nurse can learn on the job as well but I'd rather have someone who was trained in it attending me for more efficiency sake if nothing else. In any case, the civil service does need a good overhaul including the induction process. I do respect your opinion and believe you have every right to have it. Change is always hard and at most times un-welcome, but until a final form is presented we have nothing to judge upon besides some recommendation papers and pure speculation.

Your example of nurse doesn't come in line with the argument as certain fields are different that is why we don't have doctors or engineers group. But I do agree with you that the final form hasn't been presented yet so we can wait till the picture gets clearer.