The development kit for Home has been in the hands of the developers for a few weeks and will allow them to develop super awesome environments, trophies and games for the Home platform. Eventually. Currently the dev kit is at version 0.1 and contains basic tools for creating scenes. Right now it only supports models created in Maya, though that will no doubt be expanded to other 3D graphics packages, such as 3D Studio Max and Softimage XSI.
This information comes from a lecture given at the Develop Conference last week by James Cox from SCEE. He laid out the plans for upcoming versions of the development kit, saying that version 0.8 will allow 3D game creation for within Home spaces. Version 1.1 will be the first time the exporter for trophy achievements will be made available.
We're a little worried at just how functional Home is going to be this Autumn, if the kit currently has such limited tools. Will all the upcoming titles for this year support trophies, minigames and Home spaces? That depends on how quickly the new versions are shipped out to developers. Sony is still determined to release the Home platform this year.