An update for Unreal Tournament Engine editor, that will allow UT3 mod-makers to cook their mods into the required PS3 format is coming soon. It should be released next week after wider testing.
To quote: We're very close to releasing an update to the Unreal Engine 3 editor, that comes with the PC version of UT3, that will allow UT3 mod-makers to cook their mods into the required PS3 format. We've been doing some internal testing and we're hoping to expand to a wider group tomorrow or Friday.
If all goes well then we should see the update released next week which is what I expect will happen. Obviously the process works, as we put out a few mods before Christmas and people seem to be playing them, but it is the update to the editor that we're testing.
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