Camcorder use DVD is not new thing and also not new technology.
If you want new technology, you need to wait until Sept. for new JVC release for their 30Gb or 20GB hard disc model
MiniDV use tape to store video in "avi" format which is uncompressed video format. If you want to transfer it into DVD discs, you need to have a relatively powerful PC to reencode to mepg2 format and then burn to DVD.
DVD camcorder use mini DVD discs to store video in compressed mpeg2 format. You should be able to play it in normal DVD player. Sony's mini DVD disc is relativly expensive at the moment.
If you want "new" technology and cannot wait until Sept., you can get a JVC model which use 4GB Microdrive (or compact flash) to store 1 hour video.
JVC GZ-MC100 £524 click here. Great toy, one problem, the video quality for low light is not good.