During the many years I have been df'd the org has printed a new Bible, new song book, doctrinal changes, so has anything changed re reinstating someone?
No, it has not changed.
Does zoom attendance count nowadays?? Or would I be expected to visit KH in every place I'm working in that week?
No, you are expected to be at the Kingdom Hall to show you are repentant. Its like saying sorry to your wife. You have to be there in front of her to get the forgiveness.
The oaths make one a dedicated and baptised person to Jehovah (not Jesus as the Bible states) and the WT society, by dfing they have effectively annulled the baptism oaths?
No, you don't need to get re-baptized. Baptism is like acquiring citizenship and disfellowshipping is like getting imprisoned for breaking the laws of the country. When you are released you don't apply for citizenship again.
Another question, if reinstatement is successful, is the person required to sign a new Publisher record card, or do they still have the old one and simply continue its use?
Depends on which country you are in and what data laws prevail. But in any case, a new card is always made when you are reinstated.
Reinstating request would be to a neighboring cong to the one where I was df'd as I live in their territory now.
The request needs to be sent to the congregation where you are attending the meetings. If the orginal committee is not far away, then they will come and conduct the reinstatement hearing, or else, a new committee in your current congregation will handle the matter and forward their recommendation to the original commitee.