An interesting little bit from the Dragon Bash content reveal today that relates to sPvP:
" Fight to Keep Your Spot on the PvP Leaderboards
We’ve improved the way that the PvP leaderboards reflect excellence! Inactive players will automatically start to slip down the leaderboards over time, allowing new and active players an opportunity to fight their way up to a higher rank. This means that the leaderboards will more accurately represent the best PvP players.
Authorized Shoutcaster Program
In the new Authorized Shoutcaster Program, when highly rated PvP teams are matched-up in rated play, authorized shoutcasters will receive a notification and be allowed to enter that match as a spectator to bring you the action on a slight time delay. "

