Riot Games has been expanding the Valorant agent roster regularly with the introduction of Gekko and Deadlock this year. In addition to this, they try designing new ones, and leakers often see their files being added to the game. Recently, a trusted Valorant leaker, ValorLeaks, leaked a new agent codenamed "Giraffe," and soon after that, ValorantLeaksEN also shared a screenshot of the agent's folder in game files.
However, just like Cashew, this agent is under development, and there are no guarantees that it will be the next agent, i.e., Duelist in the game, or will ever be released as Riot scraps multiple agents that they think won't fit the game. ValorantLeaksEN has also shared the audio file that was found in the game, and you can listen to it below:
Apart from this, we don't know what the role of the Giraffe will be or what sort of abilities it will have as an official announcement from Riot is awaited yet. However, if it is the next agent that we will be getting in the game, it will be a Duelist, as revealed by Riot.
We will update this page once we have more information about the Giraffe agent, so make sure to keep an eye on it.