There is a slight revamp in the H2 Mathematics syllabus for 2016/2017 JC Students. On top of the (usual) H2 Mathematics (subject code: 9758), students who are mathematically inclined and want to specialise in Mathematics, Sciences or Engineering has another subject that they can consider: H2 Further Mathematics (subject code: 9649).
According to SEAB, H2 Further Mathematics is to be offered with H2 Mathematics as a double mathematics course.
The syllabus for H2 Further Mathematics can be found at: http://www.seab.gov.sg/content/syllabus/alevel/2017Syllabus/9649_2017.pdf