Nice. Odyssey under AROS will have much of the functionality of the MorphOS version.
Good to see html5 support progressing.
I don't see what's new in this video, actually. It's not about HTML5 video support at all.
This is about the youtube.js extension being added so that direct links appear and binding mplayer to the related filetypes in mimetype settings, but it was already possible in previous versions.