It seems the proverbial cat may have been let out of the bag with an accessory listing on by a third part company.

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A quick search of the company name VSTN and the term surface mini results in nine different cases for the upcoming device.

According to all of the product entries they will become available on May 18th, 2014 for purchase.

So is that an indicator that the rumored Surface Mini will be available in that time frame as well?

Something to definitely keep an eye on.