Thanks to GPK collector Henry Mora for finding these picts online. It appears Topps, maybe with another company, has launched Sgorbions Slime. Sold at news stands in Italy for €2.99 each, the box appears to start there are 12 different ones. Based on the packaging each container contains some slime and 1 GPK character. They look a lot like the old Minilkins. If anyone knows any Italian or has information on the release please comment on the article.
Update: There is also an activity book that comes with each container of slime. See below for more pictures from some Itilian Facebook pages and a news stand in Italy.