In lieu of news of actual Torchwood action figures, it appears that the Mini Mates range are doing a new set of Doctor Who figures, including Captain Jack Harkness.
You can see the designs for the figure here and further info on Mini Mates here. These are primarily a US range of toys but can usually be found in the likes of Forbidden Planet in the UK.
Plus the 9th Doctor, 10th Doctor, 10th Doctor with coat & Martha Jones
Thanks to Josh for the heads up!