Just an FYI, these items are from the Adventure Games that you download on the PC. I've got all 4, but have only played the first one. In it the Doctor sends Amy to retrieve bits of Cybermen & Daleks to build a weapon to stop a Dalek invasion.
I know the big push for DW stuff this year was some sort of "Augmented Reality" angle that really played up the high-tech side of toys. After seeing the gun I think these are basically fun "advertisments" aimed at kids to generate intrest in the games.
Moffat has been adamant from the get-go that the games are canon as far as he's concerned, so I guess it makes sense that the games will get a toy push, too.
Being a big TARDIS fan, I have to say that the personal TARDIS looks pretty sweet.