The official Opeth's webpage states it will be released on September, 27th. When I click on your link it appears the same date, so I don't know.
If you're not used to growling, your initial reaction is pretty common. It happened to me too but after reading in every damn forum (back in the time) "Opeth is the best metal band ever!!!" I just continued listening the album until I get used to that vocal style and sooner than I expected I was totally hooked. Maybe you should try that approach.
If that doesn't work, Opeth already has released four albums with zero growling (Damnation, Heritage, Pale Communion, Sorceress)...
Answering your question: no, Opeth has some instrumental works here and there but are very brief and they act more link an interlude between songs (songs with vocals I mean). Now... in a lot of their songs there are long passages that are instrumentals, and they kick ass, but as I said earlier, you need to give the album a chance (if you liked the other bands you mentioned, you should be able to "tolerate" Opeth. You're just suffering from the shock of being exposed to growling
).