I have my answer, and it is yes, TRIM in RAID 0 works with most 7 series Intel chipsets, with IRST 11.0 and above.
Personally, I want to thank Intel for this. In a sense, we have this now for free, although the development of this was not free for Intel.
At this time, this feature is not available on all Intel PC platforms, which will disappoint some people. Given that this is a new feature, not available on any other platform that I am aware of, IMO we should wait and see if it becomes available on other systems, before we complain about the lack of it.
Regardless, nice work Intel!