I don't know if this is a bug or not, but I did the tapestry thing and clicked on the "Dragon Age <location>" menu drop down and selected Dragon Age Inquisition. It hi-lighted the section, but I couldn't do anything. No big deal. But... when I selected the Menu Icon next to tapestry and selected "Replayed Startup", after DA 2, it started into the Inquisition storyline.
I am pretty sure this wasn't intentional because the text at the bottom was not what was being spoken. It named files like "ai_blab_blah.eng". I actually stopped it after about a minute because I didn't want to ruin the story for myself..
So either, it is telling me things it shouldn't OR the text at the bottom is messed up.
I think it's supposed to be there. The third "chapter" is (I assume) the prologue to DA:I, setting the scene, rather than giving away the plot. I've seen the same portion online as a trailer.
The weird "tags" at the bottom are, I suspect, place-markers where the actual narration text will be inserted some time between now and launch. Like everything else in the Keep, the ISS is still in Beta, so I'm sure that's all in hand. It's worth flagging up as a possible bug just in case the devs aren't aware, but I suspect they probably are.
Similarly the sound mix in the new section is wrong, the music drowning out Varric's narration in places. Again, I'm sure they're working on that, but there's no harm in reporting it just in case.