This game can now be found at GOG.   A tidbit from the promo:

Prepare to embark on the final adventure in Ultima--the best selling role-playing saga of all time that has nurtured generations of gamers. Answer the call and return to Britannia for your last epic quest. As the heroic Avatar, only you can save Lord British and his people from the evil Guardian who has devastated and corrupted the land. Valiant combat, magical prowess, and knowledge of the eight virtues are your weapons against evil in Ultima IX: Ascension

Also, be sure to visit GOG's Youtube channel.

We recently posted about some Ultima IX plot summary documents at Ultima Aiera but Segorn writes that they now have the full final revision of the "Bob White plot", which runs to a massive 53 pages.

Ultima Aiera has more Ultima design docs with 26 pages of documentation on "Ed del Castillo’s revisions to the plot of Ultima 9".

The German Eurogamer site looks back to Ultima IX explaining why it is a failed classic but still looks well on modern hardware.

For those with Challenged German, here is the Yoda translation of the article.