How are technical articles useful? Would you say that it was a forecast into what could be in the next exam? How often are technical articles published?
You mentioned that there was a new syllabus, apart from big data I don’t see time regression analysis in the bpp revision book.
The technical article are worth reading (although there is nothing that isn’t covered in our free lectures). They are not a forecast at all and there is no schedule regarding when they are published.
Time series and regression analysis have always been examinable because they are assumed knowledge from Paper MA (was F2). They are not so likely to be examined in Paper PM, but they can be.