In a post today on the forums, Turbine announced the studio is looking for raiders to test the new raid coming with Update 18.2.
“Do you enjoy group content? When an instance is being done with your kin or your friends are you always there? If the answer to those questions is yes, we may be looking for you!
We are coming up on the time when we will begin testing our new raid and other content on our Palantir test server and we need more people to help us test the content out and make it as great as is can be. If you would like to help us out and become part of our testing group, here is what you will need to do.” – source
There are many requirements to be eligible to join the Palantir test server so be sure to read them all before you enter here.