Back in the day, you could sequence a genome and get a Nature paper out of it. Pretty soon, the sexiness of genome sequencing wore off, and it took a bit more to get into a vanity journal. You had to sequence something cute and cuddly, something extinct, or a lot of genomes at once. Any other genome sequencing projects were relegated to lower tier journals.
Now, it appears that even sequencing the genome of charismatic megafauna only gets you a press release. As TR Gregory points out, the sequencing of the Kangaroo genome was announced in such a manner (Science by press release). But check out the title on the press release: