So while there has not been any specific rumors on a new mac mini I do think we will see a major redesign this year. With Apple moving to the new U variant processors, soldered ram, and m.2 SSDs I think we will see a much smaller mini redesign. Think Intel NUC. All aluminum casing just like before but with an approximate size of a 5" or less square. Because I have been into hackintoshs of late I have designed a case for the Intel NUCs. In my personal opinion I think it is as close to the "new" 2016 Mac Mini as I can get. Please know that this is just MY opinion and not based on any information or rumors.