Hmm, works on my board, which isn't an Intel. While the station driver site lists 11.1.0.1006 as official, it doesn't show up on the Intel download site unless you explicitly search for it. It also has a list of supported products, which are only Intel boards. Their officially supported version, 10.8.0.1003, lists as supported products: "Intel® Rapid Storage Technology", not specific motherboards.
So they must be releasing versions on their own motherboards only prior to going official. It looks to me like neither is official if it isn't listed on the Intel RST download site.
BTW, I went looking for the 1006 on the Intel site after seeing the "official" version on the station drivers site, but must have accidentally picked up 1032.