See till now there are no notifications that can ascertain your question. So I would say emphasize more on the new syllabus and read some stuffs from the others which will be your back up. If notification later while release says that you have to give exam in New syllabus then you will and if they say to give you exam in old syllabus then also you will not feel a great prob.

So following this strategy will be a no loss situation.

Have a great eve!