Update debian iso's

"For a very long time, we've been including *update* images alongside
each point release of Debian installer images. These update images
contain *just* the changed binary and source packages from release 0
in each major release series, up to the current point release."

I have been using "update" disk iso's for a long while.

If you have suspended these update disk iso's then how may I update 
point releases?

Suggestions?          Now 28 DVD's

Will it now be necessary to download the entire set for each point release?

Thanks,

Mike Schader