Another attempt by Auran to extend the life of their Trainz franchise. While TS2009 does offer some new features, it still largely consists of content dating back to the earlier releases from the early-mid 2000's. There's a few new features including the ability to specify a finer mesh for terrain during route building, but at the same time also broken some of the many thousands of legacy items created for previous versions and hosted on their own Download Station.
TS2009 doesn't really look or play better than its predecessors. You can specify an increased draw distance but this was already available for earlier versions by a third party utility. There's still no proper support for disciplined timetable operation or any sort of autonomous AI signalling or despatcher. Scorching down a main line at 80 MPH, it's still up to you to set the route ahead for your train and regulate any other trains accordingly.
Surveyor remains a powerful route building tool but still lacks native support for DEM importation or alignment with real world geography (e.g. Lat/Lon markers from Google Earth). You still can't create decent pointwork with frogs and checkrails using the built in spline track and you can't specify precise radii for curves either. Placing default tunnels remains difficult as these can only be aligned at certain angles making it hard to match prototype placement.
Trainz' biggest asset is the huge amount of - largely free - third party content available but most of this works quite happily in previous versions.
Before changing back to a mainstream product with TS2009, Auran had been going down the road of releasing "Classics" themed packs which were supposed to be culmative (but excluded the content from all the previous legacy versions). In bringing out TS2009 the first two "Classics" releases were incorporated but perhaps the biggest sin is that Trainz Classic 3 - which featured the UK Settle & Carlisle route and an excellent collection of rolling stock was left out.
IMHO Auran really need to start thinking where they are going with their train sim product. There's already a TS-x in pre-production but I remain sceptical this will be anything other than yet another attempt to milk the same old 9 year old software, with a few minor tweaks and changes.
In conclusion, I must state I am not in any way anti-Trainz. I have purchased most previous versions of the software and TRS2006 (for which I created a number of routes) with Trainz Classics 3 represented the pinnacle of what the game could achieve, without a major re-write. My overall score reflects the fact that if you already own a previous version of Trainz, certainly TRS2004/TRS2006 then unless you are a diehard Auran supporter think twice as to whether TS2009 is a Trainz too far.