Yes, that is true, but as people have told me, games that use that technology won't be out for a few years.
That said, I'd rather wait. Were always going to be behind the times in some way though...
Personally, I'd really give the ATI X1950 PRO a look. It'll survive the last set of Direct X 9 games, and will be able to play them at high settings.
Its faster than the Direct X 10 card, the 8600GTS at Direct X 9 games for instance!
Plus, its rather cheapish.
Its up to you though. I don't know how much Direct X 10.1 is going to add.