We have a big batch of class tuning coming with next week's reset! 6 classes get changes in both PvE and PvP, with Seal of Diurna's Chosen getting a big 50% nerf in PvP as well. It's all buffs on the PvE side, while the PvP changes are more of a mixed bag, so let's take a look.
Tuning (Source)
We regularly make combat design adjustments based on gameplay data and feedback from players on class performance. With scheduled weekly maintenance in each region, we’ll make the following changes to classes that are over- and under-performing in various areas:
Classes
Evoker Preservation All healing increased by 6%. Does not apply to PvP combat. Druid Restoration Moonfire now costs 0.3% mana (was 1.2%). Hunter Survival Survival Hunter 4-set Focus cost reduction increased to 20 (was 10). Survival Hunter 4-set damage bonus increased to 80% (was 50%). Paladin Holy Word of Glory healing increased by 15%. Does not affect PvP combat. Light of Dawn healing increased by 20%. Shaman Brimming with Life now increases maximum health by 10% (was 8%). Enhancement Chain Lighting damage increased by 10%. Flame Shock damage increased by 10%. Frost Shock damage increased by 10%. Fire Nova damage increased by 10%. Crash Lightning damage increased by 10%. Primordial Wave’s additional Lightning Bolts now deal 175% of normal damage (was 150%). Not applied to PvP combat. Warlock Fear now costs 4% of base mana (was 5%). Demonic Gateway now costs 10% of base mana (was 20%). Player versus Player
Items Seal of Diurna’s Chosen will deal 50% reduced damage in PvP combat. Demon Hunter Havoc All damage reduced by 4% in PvP combat. Demonic Wards now reduces magic damage taken by 5% in PvP combat (was 10%). Druid Balance Developers’ notes: We recently removed the PvP nerf for Frenzied Regeneration primarily to help Feral Druids, but Balance Druids got a windfall and became a little too powerful with this change. We’re pulling back on this buff specifically for Balance Druid only, so that their survivability is more in line with everyone else. Frenzied Regeneration heals for 5% health every sec (was 8%) for Balance Druid in PvP combat. Balance of All Things will now give the correct amount of critical strike chance in PvP combat when 2 talent points are invested into it. Restoration Wrath damage increased by 50% in PvP combat. Starfire damage increased by 50% in PvP combat. Moonfire damage increased by 80% in PvP combat. Hunter Marksmanship Sniper Shot’s (PvP Talent) range increase reduced to 30% (was 40%). Sniper Shot’s (PvP Talent) damage is no longer affected by Mastery: Sniper Training. Paladin Holy Flash of Light healing increased by 12% in PvP combat. Judgment damage increased by 30% in PvP combat. Hammer of Wrath damage increased by 50% in PvP combat. Holy Shock damage increased by 20% in PvP combat. Glimmer of Light damage decreased by 25% in PvP combat (was 30%). Priest Mental Agility now reduces the mana cost of Mass Dispel, Purify, and Purify Disease by 25% in PvP combat (was 50%). Holy Holy Fire’s direct damage is now reduced by 20% in PvP combat. The cooldown of Chastise is now reduced by 1 second per talent point from Voice of Harmony in PvP combat (was 2 seconds). Rogue Subtlety Rupture damage is now increased by 15% in PvP combat. Backstab damage is now increased by 45% in PvP combat (was 30%). Gloomblade damage is now increased by 45% in PvP combat (was 30%).

Theramore Tabard and Mini-Mana Bomb can now be purchased from vendors in MoP Remix.
In an unannounced hotfix that went live today, Blizzard added Theramore Tabard and Mini Mana Bomb to Horos. You can buy the items for 500 Bronze each.
Players were having issues obtaining Theramore Tabard and Mini Mana Bomb in MoP Remix because you had to complete the scenario at exactly Level 35 and dinging to Level 36 would make you ineligible to receive the rewards.
To work around the issue, Blizzard simply added both items to vendors, however, it seems players who completed the scenario did not receive the items retroactively.

Blizzard released a new Crusty Crawler mount that you can buy for USD 15 in the in-game shop.
The mount was available as the Traveller's Log reward back in September last year.
(Source)
Make waves and get cracking! Help this crabulous crustacean claw out of nautical nonsense and shellebrate life on land—now available through the in-game shop.
Add the Crusty Crawler to your collection before it skitters back to the deep blue sea on June 30, 2024. This offer requires a World of Warcraft® subscription or Game Time and is not available in World of Warcraft Classic progression games.

Check out the most popular specs for Mythic+ during the fifth week of Season 4.

.increase { color: #32CD32; } .decrease { color: #FF0000; } DISCLAIMER
The following post is based on data taken from u.gg, which has combined thousands of parses from live servers.
The Most Popular Specializations for Mythic+ in Season 4 Week 5
This week's affixes are Fortified, Storming, and Bursting.
An upward arrow (▲) represents an increase in popularity, while a downward arrow (▼) represents a decrease, compared to the previous week.
The Most Popular DPS Specializations
Shadow Priest - 18.7% (▲0.4%) Augmentation Evoker - 13.1% (▲0.8%) Retribution Paladin - 13.0% (▼0.7%) Fire Mage - 7.1% (▲1.3%) Destruction Warlock - 5.2% (▼0.9%) Beast Mastery Hunter - 3.9% (▲0.3%) Frost Mage - 3.2% (▼1.3%) Havoc Demon Hunter - 2.6% (no change) Demonology Warlock - 2.6% (▲0.2%) Outlaw Rogue - 2.6% (no change) Arms Warrior - 2.5% (▲0.3%) Balance Druid - 2.3% (▼0.1%) Devastation Evoker - 2.2% (▼0.4%) Elemental Shaman - 2.1% (no change) Windwalker Monk - 2.0% (▼0.1%) Fury Warrior - 1.9% (▲0.1%) Unholy Death Knight - 1.6% (no change) Subtlety Rogue - 1.6% (no change) Assassination Rogue - 1.5% (no change) Marksmanship Hunter - 1.5% (no change) Frost Death Knight - 1.5% (no change) Affliction Warlock - 1.5% (no change) Feral Druid - 1.4% (no change) Arcane Mage - 1.4% (▼0.1%) Survival Hunter - 1.4% (no change) Enhancement Shaman - 1.4% (▼0.1%)
The Most Popular Tanks
Vengeance Demon Hunter - 62.6% (▼1.5%) Protection Paladin - 9.9% (▲0.2%) Guardian Druid - 7.9% (▲0.2%) Blood Death Knight - 7.8% (▲0.2%) Protection Warrior - 6.2% (▲0.3%) Brewmaster Monk - 5.5% (▲0.5%)
The Most Popular Healers
Restoration Druid - 39.0% (▲2.0%) Mistweaver Monk - 14.2% (▼1.0%) Holy Priest - 14.2% (▲0.1%) Restoration Shaman - 13.3% (▲0.1%) Discipline Priest - 6.6% (▼0.5%) Holy Paladin - 6.5% (▲0.1%) Preservation Evoker - 6.2% (▼0.8%)

Just a quick reminder: there are no class restrictions on the class apparel vendor in MoP Remix!
In MoP Remix, Jakkus sells class-specific cosmetics without any class restrictions! You only need to earn two achievements to buy them. Complete the 'Landfall ' achievement to unlock ensembles for 4,000 Bronze each, and the 'Isle of Thunder' achievement to unlock weapon arsenals for 3,000 Bronze each.
When you filter by 'All' at the vendor from the dropdown, you can buy items for other classes too, since the vendor's items have no class restrictions in MoP Remix!