Maybe this is what you're thinking of?
http://www.rebelbrewer.com/shoppingcart/products/HBC342-Experimental-%2d-1oz.-Pellets-Hops.html
I dont know how similar it is to Simcoe but here's the description:
From the good Folks at the Hop Breeding Company, the same folks that brought us Citra (Citra is HBC394), Simcoe, Palisade, Ahtanum, Warrior etc., comes a brand new hop experiment. HBC 342. We have been chosen as one of the few shops to test market this, as yet unnamed hop. Because this is a test marketing, we ask that anyone who uses it to please leave feedback here on this product page.
Usage: High Alpha Aroma
Description: HBC 342 is a high alpha aroma variety bred by The Hop Breeding Company. It has been selected for its high alpha and pleasant aroma.
Despite its high alpha levels, brewers have responded favorably to HBC 342s aromatic qualities describing the aroma as mild, pleasant, citrusy and watermelon.
Typical Beer Styles: American pale, amber, IPA
Possible Substitutions: ?????
Typical Alpha Acid: 12 - 14%