The Workbench 3.1 natural successor?

[HammerD]

Which is the natural successor of Workbench 3.1?
I'm cleaning up all my old Amiga systems, just only to decide if they can be still useful of ready to be sold...
I'm reading about AmigOS 3.9 and 4.0 (or 4.1?); do they run on standard Amiga hardware or they need PowerPPC accelerator boards?

Jen

After OS 3.1 came OS 3.5, then OS 3.9 with boing bag 1, 2 and an unofficial boing bag 3 (like service packs).

After 3.9 came OS 4.0, the last official OS to run on classic hardware, but it requires a blizzard PPC or cyberstorm PPC accelerator board.

After OS 4.0 came OS 4.1, then some updates, then OS 4.1 update 1 just recently.  Requires AmigaONE PPC hardware or SAM hardware.

There is also AROS (requires x86 hardware) or MorphOS 1.4 PowerUP for classics, again requires blizzard PPC or cyberstorm PPC, however it's only available in demo form.

MorphOS 2.x (upto 2.4 now) is also available on Pegasos PPC hardware and Mac Mini.

[HammerD]

A very fast response, wow
There are still many Amiga users around, I see

OK, I understand that the best solution for my A3000/040 and A1200/030 is AmigaOS3.9 but... What I can really do better with the new operating system than 3.1?

Jen

Well the Out-of-the-box experience of OS4.0 is much nicer, icons look nicer, there is some new nice software for OS4 or updated versions of older software (AmiFTP, TuneNet, OWB Web Browser, NetSurf), etc.  

Not to mention a ton of other improvements, but you can read about it on ACube's site here: http://www.acube-systems.biz/index.php?page=software&pid=3

But if you don't have a PPC accelerator then the highest classic Amiga OS you can use is OS 3.9 BB2 and perhaps also the unofficial BB3 (boing bag 3).