Blackberry’s upcoming PlayBook has already got a drool-inducing spec list and the announcement of a partnership with 7digital has done little to ease our salivation. The 7digital music store will be pre-installed on all of the 7in slabs, giving users access to a 13 million-strong song library. That catalogue will be totally searchable, and there'll be recommendations and previews, too. In a world currently very much dominated by iPad news this is a juicy bone for us gadget hounds to chew on. Let the battle for tablet supremacy roll on.