ArenaNet just announced that as part of their upcoming camera changes planned for Guild Wars 2, a first-person point of view will be included. The update is planned for release on March 10.

The first look at the new view will be shown on the "Ready Up" livestream this Friday at noon (PT). A few of the early details on the new camera system were revealed.
Changes and new features coming to the camera system include:

First-person CameraField of View
A much requested feature, the field of view slider is a setting that will allow players to adjust how much can be seen in the game world. Players can use a slider to shrink or enlarge the field of view.

Position SliderCollision SensitivityCharacter Height