I'm glad to see that some agree with me, because ever since the announcement of a March 2010 release date, all I've seen is everyone being upset.
I'd love it this holiday too, but if they rush it and it's not of the quality that we're used to seeing from a Gran Turismo title, future iterations will suffer because of it. I'm more worried about sound business sense from SONY's perspective, as I'll have my hands full with Uncharted 2 and COD:MW2. On top of which, I'm heavily considering buying NHL 10 as well.
I'm not sure how I'm going to balance GOW3 and GT5 though..that's gonna be tough=P I'll have both day 1 though, of course.