From the announcement:
The successfully funded Kickstarter project "Tabletop Towns" have pushed the button with their printer and the boxes are now in the production line.
Julian, the projects creator is expecting delivery of the boxes in the second week of april.
He says "once all the Kickstarter rewards are depatched, I will be selling further stock via our website"
Julian went on to say that he hopes to announce a US distributor soon and that he intends to create several new building sets in the coming months. he was so pleased by the projects reception on Kickstarter that he hopes to use it for further sets of buildings.