Perhaps HT is awaiting sales figures for Silk and the Comedian before committing to Rorschach? HT may or may not have a Rorschach prototype as some pictures suggest however, dismal sales of the other two figures may discontinue the line. HT would stand to lose less money in R&D by scraping the line than produce large quantitites of a figure to remain in overhead. Businesses do it all the time.
I wouldn't consider other character's in the line a given until an official announcement. I hope Watchmen fans get more figures since I understand your plight wanting an XMO: Sabretooth to complete the line that will never happen