TheSafeHouse, a prominent EverQuest website, has previewed PlanetSide. Here's an excerpt:
With the ability to respawn within a minute of dying, the action can be fast and furious. Two forces often clash at a point where both sides are able to rejoin the fight very quickly after death. Obviously it becomes a priority to take out the enemy spawn point. Yes, there is definitely spawn camping, should the enemy move into your spawn area. However, you can also choose to respawn elsewhere. Spawn camping isn�t very productive for the enemy, as they get very little xp for killing the same people over a short period of time.
You can find the full preview
here. Please note, to view the preview you will have to create a login to their site, but they assure me they do not send spam email.