I see all the time recipes with instructions such as "freeze up to 6 months." I was looking for chicken stock in my basement freezer, and noticed one marked April, 2013. I figured, what the heck, worst thing that happens is I throw it out. Well, it tasted fine. I couldn't detect any degradation.
I freeze my stock in those quart sized plastic takeout containers, filled right to the top, so there's no air when it freezes.
Is this unusual? Do your soups/stews seem to keep forever in the freezer? I know bread and meats will only last so long before freezer burn wrecks it (though with a foodsaver, meats last a LONG time frozen). But well sealed liquid items don't seem to go bad.