There are far more updates to the devel version; for instance, 1.4 only got up to 1.4.1, while 1.5 got to 1.5.31. When a random contributor updates 1.7.15 to 1.7.16, I want them to see that note, so I want it as close as possible to the devel url. That's where I put it originally during the 1.5 series. It only got moved to the top of the formula for 1.6, because the devel block was removed (not my idea). Now we have a devel block again, so I think it's better to move the note back.