It is different, but what we ask ourselves is: (1) is it different enough? and (2) is the difference on-topic for HN?

Once a product or site has had major attention here, follow-up posts have to stand on their own—i.e. be of substance and interest distinct from the original post. Otherwise we treat it as a dupe of the original. So, what's the delta here? A commemorative Tupac post and discography is probably not on-topic for HN.

An analogy might be a sports data website. An initial post is on-topic if the product is interesting. But a follow-up post analyzing a particular game probably wouldn't be, unless there were something particularly substantive (in the HN sense) about that game.

That's roughly the thought process. We're happy to change specific decisions if we get them wrong.

This version of Rap Test seems to be different from last posted version. According to Danny Friday, Tupac test has 100% of 2pac's complete discography and new interactive mapping features.