Code: Veronica was one of the first third-party games announced for the Sega Dreamcast by the end of 1998. The game was originally scheduled for a late 1999 release following the Dreamcast launch, but was delayed and eventually released at the beginning of 2000.
While Production Studio 4 was in charge of the game’s artistic direction, the actual development of the game was handled by Nextech Corporation (a subsidiary of Sega at the time), the same company that ported the original Resident Evil to the Sega Saturn. Although, the game was originally marketed as a Dreamcast exclusive during its initial release, the game was ported to the PlayStation 2 and GameCube later, in the form of the updated version Code: Veronica X. [Infos from Wikipedia]
While the game was in development, Capcom released various screenshots from early versions of the project, in which we can see some differences in Claire’s clothes (changed 2 times before the final ones), enemies (a different looking spider, monsters placed in different areas), camera angles (different fixed visuals) and backgrounds (different items and details).