There have been no updates... Ever... I heard @DDS went quit from his romhacking job, probably depressed or something because there have been getting some dumb drama flashbacks regarding on Ganbare Goemon translation long ago. His Twitter account now empty filled with nothing (posts, retweets, likes, following, followers), same thing with his RHDN account where all his forum threads/post edited everything just dots (original topic from op now "File Not Found"), his community page is also everything gone (image and description).
I'm hoping that this translation project should be succeeded by someone else in future, someday even without him...
And it isn't possible to compress to 4mb due to script expansion maybe.