New graphic engine yes but your only going to see a new track and one loco that takes advantage of it.
With that, as with any user content created game, 80% of the people don't take the time to do it right and make halfassed stuff. I'm hoping that won't be the case, however I'm not holding my breath.
As of now there is plenty not correct, which will make you wonder if the game was really beta tested cause the stuff is pretty obvious and hard to miss. So far I've reported missing bogeys on locos, at least a dozen missing textures, rolling stock that when placed on the track in Surveyer mode actually gets placed on the track but is invisible.
IMO Auran sold a game running on a new graphic engine that is up to the community to take advantage of. Will fellow community members take the time to make good looking correctly working content, or make halfassed stuff that looks no better than previous versions of Trainz? Auran sold us the 'possibity' of a better looking game, but didn't actually give us one.
IMHO, if your a previous 06 and/or 07 Trainz owner, stick with that game for a few more months cause even though this version is supposed to give us better graphics, there virtually is no content that makes it worth 30 bucks at this time cause the community has to make all of it first. All the scenerios and sessions in this game are the same that came with previous versions of Trainz. Once you marvil over the one new track and new loco, there isn't much else.