Isn't Code Veronica a mainline game and bigger than the previous titles? Code Veronica side pretty much means mainline title in my mind. Hopefully it's that with RE4 style gameplay.
100%. Code Veronica is the fourth mainline game. They only skipped the numbering apparently because "they wanted to keep the numbered chronology on the PlayStation systems". It's the proper sequel to Resident Evil 2. I see RE3 as more of a side title than CV.
And, yeah in terms of 'size', the game's about twice as long as RE3: Nemesis.