Yup. In Alphen a/d Rijn, near the Ridderhof.
Most probable. Can't use the current one (who isn't that compatible with the Malachor issue, eh?)
There's a line, cutscene, developer comments on cutscne that was not actually included until now here and there. And bugfixes. All in all, a nice package.
Pretty much.
1.5 was 0_0
Looks like it, yeah.