I found a link yesterday to freezing guidelines, but it was for commercially frozen food, so not very helpful...BUT...it did stress the point that whether it's commercially or home frozen, it won't 'go off' unless it's thawed and bacteria have been allowed to grow - so it's safe to eat.
My own fridge/freezer has a handy little sticker inside the freezer door - these follow the guidelines that I more or less remember being raised with and are definitely for home frozen foods - the guideline for fish and seafood is three months. Pork and turkey - six months. Lamb and chicken - nine months. Beef - 12 months. The guidelines I was raised with is that after that time, no matter how well packaged, you'd probably find freezer burn...