I don't think you should be worried. Just expect it to not tread on REmake 2 too much and you'll be fine.
Okay, I'm going to lay-down a breadcrumb. There's some details I think people missed about Resistance and a leak involving Outbreakers that kinda' spelled things out (but many seemed to miss this), but one of the big motifs of REmake 3 was to make a game of "dynamic systems" and exploration. From what I know, though know this knowledge is old but probably hasn't changed, is they want the game to be kinda' a chaotic playground for various systems in the game, such as Nemesis, to work organically but also capture the feeling of an unpredictable town going down in flame. REmake 3 will be a lot more explorable than REmake 2 was and have more of a focus on making interesting gameplay scenarios happen in non-scripted ways, and giving the player lots of room to do things off the beaten path.
So it does have a little more action, you can do a few more things, but it's still focusing on being a survival-horror game, just a bit more of a dynamic one.
