I don't know what you mean by hot lofts, but it's a measurable fact that
many clubs today have less loft than their predecessors. I'll use a 7-iron
for example. Traditionally the loft of a 7-iron was between 38 and 41
degrees. Today, many manufacturers have it at about 32 or 33 degrees
(Cobra, Taylor Made, Callaway among them). This is mostly on the
cavity-back clubs because the design of these cause the ball to fly higher
than with a forged blade.
But even something like Titleist's DCI's come with a 7-iron or 36 degrees
Now you can always custom order the lofts or adjust them if you have the
equipment, but the point is if you are impressed with a pro's distance or
that of your golfing buddy who just bought a set of "space age" clubs. The
reality is you could get similar results if you took a sledge hammer to
your old blades.
If you're looking at new clubs and find you're hitting one set further
than the other, have the lofts checked before you buy into the hype of any
"advanced material" or "revolutionary shaft design"