Evokers will be in the pre-patch. Conduits and Legendaries for them have been datamined.Random question which I fully disclose may be slight bitterness coming from my own lack of a beta key: does Blizz's beta invite setup give an unfair advantage for certain players to be Evokers during the first tier of raiding? This is presuming that we don't have Evokers in the 10.0 pre-patch PTR (which is an unknown at this point).
As an example, let's say two people want to raid as Evokers in the same guild. Person A just got beta access yesterday while Person B does not wind up getting beta access at any point. If we go with the rumored 10/25 10.0 pre-patch date, Person A has had 7 1/2 weeks of extra access to Evokers that Person B hasn't. Extrapolating that out to the rumored release date, Person A would have had 11 1/2 weeks with the Evoker while Person B had 4. While a lot will no doubt be made up for by gearing once DF is out (as well as time off of work on first release), that's a major experience difference to make up for by the time the first week of raiding comes out.
Given all that has to be looked at in a beta test, it may well be worth that temporary evil to ensure Blizz can control the size of their testing pool & get eyes where they are needed. However, when you have a new class coming into the game alongside a randomized invite pool as well as a raiding player base that tends to narrowly focus people into how much they are helping the team right now, it seems feasible to me that Blizz is unintentionally giving some players an advantage towards first tier Evoker raiding.