There hasn't been any indication of when the VW Taigun will be coming out other than speculation. As far as the speculators are concerned, the Taigun should be coming out in 2015 or 2016, which really isn't that exact of a date to make plans around.
While VW remains mum on the Taigun, its competitor Honda just released photos of its 2015 HR-V at the new York International Auto Show. It is going to be going on sale this winter.
The Taigun must be close to being ready for production. VW does have a lot of other projects on the go, the Toureg, Golf GTI, and Jetta all have been revealed recently. Perhaps this is eating up VW's time and efforts.
Compared to the Taigun, I think that the HR-V has a more sproty and aggressive styling. The Taigun tends to be a bit more on the European side with less body contours and a more square shape. Additions to the Taigun's design, like roof rails and LED spotlights, give the Taigun a utilitarian look, but not really an aggressive or modern look.
Now its unclear exactly which markets both vehicles will be coming to, but let's say that you did have the choice between the two in your home country. Which do you like better?
I think I might be drawn more towards the sportier styling of the Honda HR-V than the more reserved styling of the Taigun.