As foretold the new Dune prequel series' first episode was just released. Even though the episodes will be released one at the time a week apart I couldn't resist watching the first episode right away.
It's too early to judge the series based on just one episode. The first one in a series is always a bit slow start. Setting the background, introducing the characters and setting the foundations of the main plot(s) takes time.
The series is loosely based on (one of) the prequel trilogies written by Frank Herberts son Brian. After reading the two sequels written by him to the original series I haven't read any of those prequels so I can't really say how well this series complies with the source materials.
The one thing I did notice is that they didn't once reference the war against the sentient machines by it's name. Maybe it's one of those copyright things when the producers don't own rights to all the materials, or maybe it's just to save the viewers from some additional obscure names which there are already enough now. It could also be due to the current trend of trying to avoid certain sensitive words, like the jihad in the Butlerian Jihad which apparently has ended up in the banned words list.