NIS America has released the playable demo for Ys VIII on the PlayStation 4 store today. This is personally verified to be the same as the original Japanese demo that Falcom released earlier this year, which is also the same segment that was playable at the various conventions- AnimeExpo included- earlier this summer.
Though I’ve been unable to personally verify changes, if there are any, in the translation from what was seen at AnimeExpo compared to what’s in the release now. (Though I can confirm that it’s no longer a ‘vase’!)
You can find the English demo available on the North American PlayStation store, here
Ys VIII Lacrimosa of Dana will be released in North America for all platforms on September 12.