Is it worth, the patch 4.09 official ?

[wiwa23]

Thanks for the replies.

I guess I have to experience it myself anyway.
But I'm not entirely sure about a couple of things.

What does this mean (quote from HanzBlixz)?
'just make a copy of the directory'.

Can somebody explain what I must do to have my version, without touching it (4.09b plus unified installer) working along with 4.09 official?

Can I install a clean 1946 with 4.08 to a different location? Just installing into another location than my existing install? Is that it?

Thanks in advance,

Wiwa