The current meta, in terms of composition, is two elementalists, a warrior, and the last two spots vary. Usually at least one is a thief, and then the other can be a guardian, mesmer, ranger, or engineer, depending on what you need.
It would also help to know what class you play. Ele, for example, had FGS nerfed so it’s no longer useful for anything other than mobility. Instead, everything gets Ice Bow’d to death now. Usually groups take either two s/f or s/d eles or one and a staff ele.
Warriors had a big adrenaline nerf and a greatsword damage nerf, but I think GS is still the way to go. Axe/mace also had a buff by increasing the vuln on the mace skill.
If you played before the new grandmaster traits came out (which was April) then Thieves are a bit different. Instead of the old 5/6/0/0/3, you run 6/6/0/0/2 to pick up Revealed Training for +200 power while revealed. Also, Dagger auto attack now cleaves 2 targets, which is nice in some situations. Lastly, Black Powder only blinds once every 2 seconds, which can be a pain when trying to solo something like Melandru, but in groups you should be fine.
The rest of the other classes, I play significantly less, so please correct me if I’m wrong.
Guardian, as far as I know, is the same as before. As for a not class specific change, Guards (and mesmers to a lesser extent) can instakill Lupicus from phase 2 to dead by traiting for ground target wall, and putting WoR on top of the wall so lupi’s head is in the wall.
Mesmers can also do this with curtain, or a untargetted feedback (aim down?)
Rangers got a buff to their longbow, so now a lot of rangers carry longbow solely for opening burst of fights. Barrage, Rapid fire (which is twice as fast) and then back to sword/axe or sword/warhorn for the rest of the fight. They also got a new trait that lets them do more damage to crippled/chilled/immob foes (barrage!) so overall their personal DPS is much better.
And we all still hate necros =)
