My predictions are:
1. Classification and evolution
2. Phototropism
3. Diabetes
4. Homeostasis
5. Pathogen and infection - a six marker on: the ways pathogens infect a human?
6. Nutrient cycle - a six marker on: Nitrogen Cycle?
Could be wrong - however classification, evolution, speciation, diabetes, nutrient cycles, phototropism and plant responses/hormones didn't come up last year.