From GW on Facebook, not sure if this applies to FLGS' and GW locations:
"Due to problems with the warp, the limited edition dice sets and the servo-skull tape measure - as shown in White Dwarf this month - have been delayed. (These are standard sets, not the red ones that come with the Gamers' Edition.) We'll let everyone know as soon as they're available to order, but for now please accept our apologies. Now, to purge some Daemons..."