I remember this distincly, seeing as I had and A500 and then a A500+
A500: 1.2/1.3 - although most in the UK were 1.3.
A500+: 2.0x - I'm pretty sure the boxes said 'A500 Plus' on them, although some A500+ boxes shipped with A500s in them. (Classic Commodore screw-up, and in a roundabout way, how I 'upgraded' my A500 to a A500+ ;-) )
-Jar.
