I'm in the same boat. Being a dedicated Apple user requires patience and the ability to guess and speculate endlessly about when something will be updated or released.
In the meantime we either buy the outdated overpriced Mini they have now.... or wait.....and wait, and wonder... and wait... Very frustrating at times. If there is no mini released next week, I am returning the Mini I just bought and going with a NUC.
Im not getting my hopes up. I remember when the 2014 models were released. Literally a downgrade and they sealed it up making it harder to get into. So disappointed. I waited three years and finally needed to replace my desktop. Bought the mid spec with a traditional hard drive. Big mistake.