I believe the latest version of GD Graphics Library is 2.0.33 and the latest ImageMagick is 6.3.0.
Looking at rlparkers post (and verifying the same versions on my server), it would seem that DreamHost is a little behind with their installed versions.
If for some reason you must have the latest versions, you can always submit a suggestion to DreamHost via the suggestion section of the admin panel. In the past DreamHost have shown a willingness to upgrade their installed software, unless there is some overriding reason why they can not do so.
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