I've just finished the episode (took me around 4 hours) and I liked it a LOT. As with all season starts the puzzles were a little on the easy side, but I assume you'll slowly dial the difficulty up with each episode. Oh, and I liked the fact that you controlled Gromit just as much as Wallace.
The new controls were easy to get used to, and the resulting presentation was fantastic. I think you've refined the clay shaders and textures since the demo, right? They looked way better here... photoreal in some situations. What I liked a lot as well was the use of depth-of-field (especially in the hallway), although I hope you use it much more in the further episodes, as most of the close-ups could look even better through the addition of the effect. Altogether a visually stunning game... the best looking Telltale game by far.
The music volume was far better than in the demo, but still I'd prefer a separate volume dial for the music in the further episodes. Performance was near perfect on my AMD X2 4200 at FullHD (1920x1200) resolution and highest graphics settings... and that's already a dated PC.
Altogether a great start for the series. Looking forward to the next episode :-)
(Oh, and I loooooooved the ending shot over which the credits rolled... the perspective, the composition... and if the episodes are seamless, I wonder how they get out of that pickle

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