Absolutely gorgeous sunset. Impressive on the technical side, too: great exposure, colors, contrast, and dynamic range for the sky, especially given the foreground. These are really hard shots to get right. Well done.
I love this scene and the colors are gorgeous, however I think this might be a case of "honeymoon phase" with the novelty factor of 11mm. In other words, I think some areas around the edges of the image make it look a bit too much like "11mm for the sake of 11mm" and not all of the ultra-wide effect is not being put to its best use. I'd definitely like to see this scene in 4:5, and maybe with a bit of a step back so that the lowermost pool circle can move away from the edge of the frame just a touch. I'd also love to see the scene at ~16mm and ~20mm...
If this is uncropped, it is the very first landscape that I have seen with this lens shot at 11mm, that I have liked. its very hard to shoot interesting subject at 11mm, and you have done a nice job.
I find the colors to be a bit cray cray on this one! Particularly the blues along the breaking waves and in the clouds. Nice sprawling composition, though ... The wide view with the clouds stretching upwards is really appealing. I do wish that the channel off to the left hadn't been included as I find it kind of breaks things up a bit much for me.