I say late 2000s because all the evidence suggests that Tahi started its development cycle in 2009, but since then there appears to be very little new info on the game. I emailed the team at Reticon asking for further info but the email bounced back, and the form on the site doesn't work...so for now I guess we'll either have to wait for more info (they appear to have updated their site earlier this month so I guess there's still something going on there)...or just accept that development has halted and Tahi has gone to the great vapourware graveyard in the sky.
Here's a bit of info on the game taken from the dev's website:
On a slightly different note, The Dreamcast Junkyard seems to have vanished from Google's results if you search for us. I've looked at the settings in the Blogger dashboard and everything looks fine...so we're a bit baffled as to why this has happened. The 'Yard still pops up on Bing (all is forgiven!) and other search engines (yep, they do exist!)...so if anyone has any suggestions, be sure to let us know what you think might be the problem! Thanks.