OT: CD-R's

[Digital Wokan]

I know this is something of an abuse of PLUG, but where else would I
turn for technical knowledge?  :)
I keep seeing 80min/700MB CD-R media in stores.  To the best of my
knowledge, my 2x burner only handles up to 650MB/74min.  Can anyone give
me the lowdown on the new upper limits?  Does it require a newer CD-R
drive or just newer software?
And just to put this a little on topic... Would a Linux Mandrake .iso
image file burn to one properly?
-- 
Digital Wokan
Tribal mage of the electronics age
Guerilla Linux Warrior