The trial can be played through using either of the game’s 2 unique protagonists: Emily Kaldwin or Corvo Attano (the protagonist from the first game). The free trial seems to be quite extensive as it features the first 3 missions in the game. To accommodate the trial’s length, if or when you upgrade to the full game your saves will be brought over as well.
This seems to offer quite a bit of content for its free price tag. I’d imagine you could potentially get several hours out of this, especially if you play through with both characters. The blog post does not seem to indicate that this is a limited time offer.
Since it’s release Dishonored 2 received updates which retroactively added in a mission select and an extra difficulty setting (among other things).
GameSkinny’s review of the game is rather positive, saying that is made “a huge step forward from its predecessor” is almost every aspect. But what do you think? Do you really enjoy being able to play a game before you buy it, or is it just too late to release a demo?