I'm not sure about that. At least the ZDF here in Germany uses DVB subtitles now, but I don't think the other broadcasters will follow very fast.
I believe the ARD is also looking into this.
At any rate, using DVB subtitles would be the optimal solution.
Klaus
You're absolutely right. But: UPC Direct removed couple of days ago the Czech and Hungarian DVB subtitle from BBC Prime (on S19.2E) and now it only has teletext subtitles :( This means that after about a year I have to install teletext subtitle plugin again.
Istvan