HP-12C gets 'Entry-RPN' or Error in the QSG?

[hansklav]

While preparing an RPN-Tutorial, in which I would like to indicate differences in various RPN-versions, I came across the HP-12C Quick Start Guide of 2008. On p. 7 one can read Pressing ENTER is optional after entering a number, if the next key pressed is an operation., which is (almost) the same text as in the HP 20b/30b User's Guide (p. 13).

So I presume this is an error in the HP-12C QSG, by a manual writer who is not too RPN-literate...

Does anyone of you know of a recent 12C model (the Prestige?) that has the ENTER-behaviour of the 20b/30b?
(The most recent 12C I have had in my hands is a 12C 30th Anniversary Edition, and that model definitely doesn't have 'Entry-RPN')

Thanks in advance,

Hans