Well I finally got on the PTR only to be in a random crash fest.
But here are the engineering changes I found.
Two engineering item changes:
Flexweave Underlay also grants 10 Agility.
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Nitro Boosts also grants 12 Critical Strike Rating.
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Was finally able to able to get to Dalaran and buy 3 new schematics.
High-powered Flashlight
Good for 49 twinks?
Springy Arachnoweave
Comparable to Flexweave Underlay with spell power instead of agilty.
Reticulated Armor Webbings
About worthless can work only on Plate gloves.
The vendor item is
Wind-Up Train Wrecker