.
There are some upgrades available to Knoppix 6.7.1 now in Synaptic.

Since I use a smallish LiveUSB, I don't do wholesale updates.
I only do selective updates that I expect may have some significance.

I would expect that
IceWeasel 6-something to 7.0-1 is probably is worth switching-to; but
LibreOffice update from 1.3.4.3-1 to 1.3.4.3-2 may not be worth the effort.
Just judging by the version syntax.

I note that
NetworkManager update from 0.8.4.0-2 to 0.9.0-2 is possible;
I hope someone will give us an informed opinion on this one.

Comments on other hidden gems, and other opinions are surely welcome here.