Question

I left guild wars for 3 months and just want to know all thats happened to rits in pve mostly. Ive heard of signet of spirits gettin a nice buff but thats about it. Is the class dead yet or are rits still useful in pve?

Rit spirit spamming is now one of the most powerful builds in PvE; you can solo-vanquish just about anything.

They buffed spirits. As a spirit spammer, you can solo must places in Guild Wars in normal mode. Also you can solo-farm most of Underworld easily. They are also great in PvE.

I use spirit spamming on Traveler farming and Underworld for right now. I play it as A/Rt.

Specifically they reduced the cast times of all pve spirit rituals to 1 second or less and reduced the costs and recharge on several.

They also buffed signet of spirits, as you said to summon 3 spirits at once, which makes spawning skills that trigger on summoning or destroy spirits for a benefit very powerful.

They also buffed 3 key spirit support skills, Armor of unfeeling halves all damage spirits take and makes them immune to critical hits, siphon spirit now gives much more energy, comparable to offering of spirit, but with a 3 second recharge, spirit leech aura, which now lets spirits steal life for it's duration(makes wanderlust vampirism and bloodsong do more damage).

They also buffed spawning a little bit.