Also, don't forget the activities of Csaba Huszty of Inspired Acoustics; they are actively working on a number of sample sets as well.
Upcoming organs: Salgareda (modern French romantic), and Bataszek (1902 Angster-Varga; symphonic/romantic); see:
http://www.inspiredacoustics.com/en/products/upcoming-releases
get your wallets ready for all these new sample sets by all these producers....