Finnish magazine Pelaaja reports Microsoft has plans of unveiling Halo 4 during its Spring Showcase on February 29th in San Francisco. The basis of this claim: a Twitter image posted by user @Kaban0ssi (Google Translate it if you like). It’s well known that Microsoft always holds this showcase in San Fran before the Game Developer’s Conference, but there’s been no official word concerning the FPS. We’re all awaiting an update from Microsoft, but you can take a look at the Spring Showcase invitational and Twitter image below. We’ll keep you posted on any other Halo 4 developments.