Here's how to get a guaranteed socketed item on the Heroic Week of Season 1 in preparation for raids and Mythic+.
There are two new socket item in the War Within: a PvE Magnificent Jeweler's Setting and a PvP Vicious Jeweler's Setting. The PvE version is a Jewelcrafting pattern that drops from Neru-bar Palace, and will only be able to be used on Rings and Necks. The PvP version can be farmed for now and works on more slots including Belt, Helm and Bracers.
Vicious Jeweler's Setting can be purchased for 2 Vicious Bloodstone and 9750 Honor. Vicious Bloodstone can be bought for 2500 Honor or traded on the Auction House. That may seem like a lot of Honor but remember that this week's brawl is now comp stomp. Comp stomp is a very efficient way to get honor because you're playing Arathi Basin against bots and can typically well… stomp them quickly for fast Honor gains. If you want to save some grind, feel free to buy some Vicious Bloodstone off the Auction House as these are also used in various PvP crafts such as Cognitive Bloodstone, Determined Bloodstone, Enduring Bloodstone, Algari Competitor's Amulet, and Algari Competitor's Signet.
The PvP Socket item Vicious Jeweler's Setting can only be used on PvP gear though. Once Season 1 starts, players should be able to EARN enough conquest to buy a Helm, Bracers or Belt and socket it immediately. Conquest gear was on the Champion track on the War Within Beta and could be upgraded to 619 at Champion 8/8. Once you get another 619 piece or higher, you can immediately upgrade this PvP piece without needing to spend any additional Crests.
PvP Upgrades do require Honor, so make sure to have some extra Honor saved up from this week's Comp Stomp Brawl to be able to upgrade it. Honor can also be Warbound transferred, however it's at a loss of 20%, so use it wisely!