It was a real surprise when I saw activity on #791965, which is my ITP bug to package openzwave.
As Ralph wrote, the legal status of the Z-Wave standard has been changed. According to a press release of Sigma Designs, the Z-Wave standard is now put into the public domain.
As even the specification of the Z-Wave S2 security application framework is available now, the openzwave community is finally able to create a really compatible application which might also pass the Z-Wave certification. Thus there is new hope that there will be an openzwave package in Debian.