The yellow printings on the keypad are much brighter than on my beta calculator, very nice. All keys have a good response - hmm the ENTER key is somewhat mushy still on the left but has a definitive klick on the right. For me it's ok.
The back is slightly rougher than the beta calculator, less prone to fingerprints perhaps, not bad.
There is no obvious difference in the software, except for some more nice options in the setup. And there is the earlier announced help system, GREAT.
A lot of bitmaps are stored. They seem to be loaded arbitrary to the standby screen. A gimmick, but it only wastes 286KB of flash RAM. Keep them, delete them or deactivate them by renaming ../OFFIMG to something else. The latter by the way will show the sleeping owl again

The Help System: Available also at <https://www.swissmicros.com/help>
It is invoked with F1, starts with a short introduction and the description how you can navigate, cool.
So far I only had a glance.
[UP] and [DOWN] are described to jump to the previous or following link. That works in principle but obviously not if the next link isn't on the page just displayed, needs to be rectified. Scrolling through the pages is done with [÷] and [x]. As the help files format is HTML we see fonts in various sizes, therefore some overlapping from one page to the other is useful. For my taste it could be a little bit less.
One detail I saw: the [∑REG]and[∑RG?] are misspelled [ZREG] and [ZRG?] not a big deal, there may be more errors - just report them when you find one. These I've corrected already on my DM42. Yes it's easy - you can edit the help file yourself.
So far the help system is incomplete, it lacks for instance a detailed description how alpha input works. I'm confident that will evolve to our satisfaction over time.
The help system does not mention any procedures that are external to the operation as a calculator. E.g. software update, file handling with the PC etc. I think that's ok, but needs an external manual some time

That's for now,
Günter