Oh, I think they could be lower, but why wait for something that may or may not happen in 6-months, especially when finacers often times allow re-fi's without fees in 6-months?
According to the falling support line on the TNX weekly, you might get an intra-day low around 34.25 next week, which is 0.40 or so (.04%) lower than the EOD today.
The lowest trendline on that chart could be the eventual low, but we are in a corrective move off October's low currently, and that should entail another move up off whatever low we get here this month. Once that correction is done, there should be a final move down on the TNX to new lows. That might come in the fall and continue after that. We'll see.