A recent post on Rely on Horror stated they are in the game. I doubt that, as they didn't show up in RE2, so it won't make sense to put them in RE3. Although you can see spider webs here and there, so it's possible.
Anybody that thinks the RE2 remake is better than the original from 1998 is having a laugh. It was cheesy, lacking in enemies, not very suspenseful in parts, and the extra modes were just ass. It was a good game, but not a masterpiece.
I think they probably rushed its development. When Leon and Ada descend to the lab in the tram, I could have boiled the kettle and brewed some herbal tea. Honestly. There was nothing to that section of the game, and even she was spoiled somewhat.
I expect RE3 will be a similarly fun game, although possibly forgettable after the year is up. That remains to be seen, of course.