The last thing I read was an interview from the President of Curious Labs. Poser 5 had been released for some time now and I believe they were in SP3. He said that they were working on SP4 and should be out soon. He also said he wanted users input into Poser 6. He was asked about third party plug-ins and said the problem is that Poser has never had a SDK. This was a big area they wanted to work on but he said he had no idea when that would be. Knowing this I still have to wonder if they were ever able to produce it or if they are even still working on it.