Hi,
Subject SP1 is largely the same as Subject ST1.
There are a number of fairly minor changes to the Core Reading and ActEd materials, and three more significant ones:
(1) Chapter 17, Section 1 - The section on IP pricing has been reduced and no longer contains formulae.
(2) Chapter 20, Section 2 - The section on valuing options has been rewritten. The Core Reading no longer makes explicit reference to the conventional and North American methods, although these methods are still covered implicitly under a more general (cashflow) approach.
(3) Chapter 30 - A new chapter has been added on problem solving. There is very little new Core Reading on this as problem solving is a skill rather than something to learn by reading, however, the new chapter discusses how you might go about solving problems.
More details of these changes, plus changes to the syllabus will be provided in the CMP Upgrade, which will be available from the ActEd website in due course.
I hope this helps.
Anna