Hi Joe,
> If I've installed OpenBSD 4.2 and I need a specific package (in this

quoted text
> case, net-smpd) which is not available on the CD, I must wait until

> 4.2 is officially released. Then I can get the packages I need from

> the ftp site.

Yes.
(Or you build it from ports. Still, 4.2 is very much unreleased at this

moment.)
HTH... Nico