Sorry, but there is no Haldir.
There is going to be a Helm's Deep 5-Pack for the Return Of The King line with Gimli, Aragorn, Legolas, Théoden, and an exclusive Haldir.
The 12" line is as follows
Fellowship Of The Ring
Arwen(purple dress)
Aragorn
Frodo
Galadriel
Gandalf The Grey
Gimli
The Two Towers
Arwen(white dress w/ Evenstar)
Bilbo Baggins
Éowyn
Legolas
Ringwraith
Possible future figures - Samwise Gamgee, Gandalf The White