If its like in the past... likely prorated bonus for 2019 depending on the number of months you have worked as long as you are a "confirmed" staff.
Don't expect it to be good as 1st year staffs haven't gone through the grading appraisal...

Bonus wise depends on which company you belong to under ST...
I remembered getting more than 2.4 months on 2019 but my grade is relatively poor.

Now no more A,B,C
Current one is band system:
from my understanding there's 5 visible tier.... 1(top), 1, 2, 3, 3(btm 5%).