I don't think there's a single forecast predicting fixed rates that low from legit lenders and without crazy penalty clauses. Most seem to be predicting fairly flat numbers, maybe a drop at most by a half percent from the low- to mid-4's available now. Add to that, the expected corporate tax cuts in the US (which the inevitable Conservative government here will likely try to match) will lead to running significant deficits, which will raise bond yields and stop fixed rates from going too low.
It's kind of a mixed bag for what I'm hoping for, as a strong economy will keep rates higher, and lower rates will only come if things are struggling. There's a pretty good chance that variable will be the way to go for the next few years if rates drop but bond yields stay high, but with global volatility growing (especially if Trump tariffs start to antagonise China in a major way, or they find a way to take control of Taiwan), I might prefer to play it safe with a higher fixed rate so I can sleep better...
