they are for sale online and come in sealed plastic with paper reading "gamma experimental" and "confidential" as if they are pre-release strings sent out for a sort of playtest they also have identification codes. For 2.50 a set i think I am just going to buy them and put them on a back up racket. I think one of them may actually be zo-twist.
I was also guessing they were experimental strings from a previous year, and that they were not for this year. There were dates on one or two of the packages next to the identification code and they were from 2011 i believe. I purchased them last night cause i figured for 10 bucks if they end up being crap oh well, good strings for a backup racket. Also, the orange looked like they could be related to the zo-twist. Will post more detailed pictures up when they arrive sometime next week.
Came across these gamma experimental strings online. Anyone heard of them? came in brown, orange, grey, and a natural color. Says confidential on the package as well. If anyone has any info on these I may purchase them since they end up being a measly 2.50 a set.