I see a new Perl 6 book has been announced. It sounds quite interesting, the title is 'Designing Perl 6', and it is an explanation of the design methodology which is being used to decide which new language features will be in Perl 6. This should be an interesting insight into the minds of the Perl 6 designers.
I've snagged a copy of the cover artwork, which you can find here.
I've also a higher resolution version which you can find here (152k)