Do you want to go to Europe and do this tour?

[Vladv1]

"The first tour we ever did, we put out Feel the Fire, and Anthrax I think had just put out Spreading the Disease. We were both on Megaforce, and Jonny Z said, “Do you want to go to Europe and do this tour?” And we were all pumped-up and excited. He says, “It’s gonna be you, Anthrax and Agent Steel.” And Anthrax and Agent Steel I had never heard of before in my life."

Caught in a Mosh, by Martin Popoff.

Can "this tour" mean "a tour", since the information was new to the author at the time?

 

[Tarheel]

They are talking about taking a tour of Europe-- one specific tour that they have in mind. Apparently, it's something they'd really like to do.

 

[jutfrank]

I don't feel very confident that I understand what you're asking but I'm going to guess that you're on the right lines.

To put it very simply, yes, this use of 'this' is a way to introduce a new element into the narrative discourse.