^^^ They're using prototype Gerstlauer trains. The old PTC's are in a museum in Texas along with some track.
Here's some pictures from today
Chain guide's almost done
You can see the turn starting to take shape
See?
Some rails at the bottom of the third drop
And here's a somewhat better view of how that first turn is shaping up
And on Amusement Today, apparently they've passed the 40% completion mark and, well, here it is,
Amusement Today said:
Weeks of 100-degree-plus temperatures has not slowed down construction on the rebuild of the Texas Giant at Six Flags Over Texas in Arlington. Construction crews from Rocky Mountain Construction reached the 40 percent mark this week despite weeks of excessive heat. Workers are wrapping up the installation of the stairs for the lift hill and will soon begin installing the new chain lift sections. The impressive 79-degree first drop is now complete and work is now underway on the 114-degree overbanked curves. With the park wrapping up daily operation this weekend, Rocky Mountain is now turning up the heat on its own, with 20 workers now onsite split among two crews - all working six days per week. The new Texas Giant will make its debut spring, 2011.
114*? What the hell? They are really changing things a lot. First 95, then 112, now 114? if that's true, then daaaaaaamn.