I think Fisher-Price is starting to catch on...people love track and they want more of it to build bigger and more exciting track layouts. They have been pretty quiet about this release but you can find a new Expansion Track Pack that contains 20 pieces total--12 of which are track pieces.
You get a right switch piece, a left switch piece, 4 half straight pieces, 3 regular straight pieces, 2 curved pieces and 1 crossing piece. Plus signs and trees to add color to your layouts.
See pictures from Fisher-Price here
Image 1
Image 2
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