Installed the new canopy latch and can confirm that it does work a bit smoother and easier than the old set-up plus the safety catch is a more robust design; the old safety catch seems trivial in comparison. The canopy handle rests on UHMW plastic when in the taxi position instead of on the metal rollbar.
The UHMW latch block is also different, a protrusion on the handle slides around the back of the latch block and into a detent when latched. Works nice. The provided latch handle is bare steel and not powder coated like the old handle. It will need to be painted.
The outside handle is the same as before but a new one is furnished since you have to match drill a new hole in the inside handle tube and the operation will ruin the threads in your old handle if the install is a retro fit. It is aluminum and as before needs to be shaped and painted if so desired.
The retro fit kit comes with a small assortment of washers, shims, and bushings to compensate for variations in the original canopy installation.
The retro fit kit is rather expensive, runs about $90 and like Scott says doesn't do anything more than the old handle and safety catch, just does it better.