PPRuNe Forums - CX Fleet and orders

I have my first interview with CX coming up and am finding conflicting information on the number of aircraft on the fleet and the orders for new aircraft. Just on the CX website the number of total aircraft varies from 89-101. Is there a better source for the information?

Also, for the interview, what CX aircraft systems should I know? I have a fairly good grasp of the B747-400. Do I need to know much more than the engine types and thrust ratings on the other a/c?

Thank you for any assistance and please forgive my ignorance.