HTTYD will be released in the US in a little over a month. I wasn't sure about early concepts, but the initial reviews are at 100% on RT and reportedly the script made Stephen Spielberg cry, so I think it'll be a fitting end to what may be the best animated movie series ever (maybe vs. Toy Story? and counting TLK as a standalone vs. a series).
I couldn't be more excited. I think the franchise is a high-water mark for the art, with absolutely tip-top animation, storytelling, music, and acting. I'll be in those theaters as soon as it's out, and will be furiously dodging spoilers until then.