The Register reports (Penguin-free Linux 2.6.29 kernel released) that the new Linux kernel release has ditched the usual penguin mascot, Tux (below), in favour of a new one.
The new mascot, Tuz, is apparently a Tasmanian devil, and has been selected for this release to publicise the plight of the Tasmanian Devil, which is suffering from a particularly nasty infectious tumour disease (see for example my article In the Journals - Tasmanian Devil Tumours). The new mascot's quite cute, particularly as he's sporting a penguin beak mask (El Reg suggests it's hiding a facial tumour).