I am a bit lost.. I own but never played hitman 1.. I do not own Hitman 2... I pre-ordered Hitman 3:
Do I need to purchase hitman 2?
What is the benefit from purchasing or not purchasing 2?
It's $59.99 on PSN I likely won't purchase it at that price!
You just missed the 11.99 sale by a few hours then... check out the pre-launch info dump link in the op, which links to the Hitman website with a ton of info