Bioware has confirmed there is going to be a separate pvp bracket for level50 players, including additional new features as well.
Level 50 players will have a bracket of their own, playing in separate Warzone matches to lower level players. This is something we have wanted to do for some time and now that there is an increasing number of level 50 players we will be implementing the feature in January.
Ranked Warzone matches, and several other "optimizations" are getting rolled out soon as well,
You’ll see several optimizations come online in January, and we are going to continue to tune this as time goes on.
We also have other exciting features coming in the near future including Ranked Warzone Matches, PvP Stat Tracking, Open World PvP Loot Drops, more Warzone medals for different objectives, Guard Optimizations and Target Optimizations.
Additionally we’re looking at ways to enable team vs. team, more level brackets and the ability to choose which Warzone you want to play in.
Ilum is getting re-vamped (more or less),
ilum pvp guide
The planet of Ilum currently allows for open world PvP even on a PvE server, but the mechanics and incentives of the planet are not in as intended yet. We’re working on longer term goals for the planet and for other PvP areas, but expect to see some interim adjustments in January - such as more respawn points to focus conflicts, restricting Companion Characters from the area, and revisions to rewards. Ilum will also become a major source of Valor.
Valor buffs will increase and decrease based on the objectives your faction owns. These buffs increase the amount of Valor you receive per player kill. However they do not give anything in and of themselves, so players will still need to defeat other players for significant Valor rewards. Additionally, daily and weekly missions will require player kills to complete. Player kills for quests and Valor credit will have diminishing returns per player killed. So, the more players that are fighting other players, the better it is for everyone.