On the Rune-keeper side of things, the devs have a variety of goals for the class, such as refining the class' trait trees, allowing the class to perform as a "hybrid AoE damage dealer," and buffing the class' AoE healing slightly. Chisels and rifflers will be seeing big changes in order to allow all of them to be used by Rune-keepers of the DPS and healing variety rather than gearing them toward one or the other. As with all other classes, the team is focusing on improving existing skills rather than introducing new ones, and as such the greatest changes are coming to the Rune-keeper's trait lines. Each trait line's four-set bonus is seeing changes to some degree.
Meanwhile, in Hunter land, the goals for the class are much more concise. The devs want to give players further incentive to use all three of the available combat stances while performing "general cleanup" on the class. All stance-specific bonuses have been removed from all trait lines and redistributed elsewhere, thereby keeping Hunters from being locked into a specific stance based on their choice of trait line. Hunters will also be granted the ability to dual-wield and to wear medium armor from the get-go, which should help new players immensely. Of course, a variety of Hunter abilities have been improved, and the class is also gaining two new skills to round out its repertoire.
For the entire set of changes to both classes, head on over to the dev diaries and soak up all the juicy details. And remember, Lord of the Rings Online: Rise of Isengard launches in just a week, so prepare yourselves accordingly.