As of this post, Amazon has yet to take any preorders for their newly announced Exclusive The Black Series 6-Inch 4-LOM And Zuckuss 2-Pack, Han (Carbonite) and Carbonized Darth Vader figures, and they are currently listed as "Temporarily Out of stock".
Hasbro said Amazon would start to take preorders starting at 1:30pm, but did not mention which time zone unfortunately. Best thing to do is copy the direct product links below and check their site once in a while. If we see them go up for preorder we will make a new post.
Direct Product Links: