Upgrade KDE4/3?

[natman]

I have Kubuntu 8.04 installed with KDE 3.5.9, when kubuntu 8.10 is released and adept asks me to upgrade what will happen. Will i get an upgraded KDE3 , and option of both 3 and 4 or will my 3 be gone and only left with 4?

I have my home partitioned separately, and am using 64bit right now, if i go back to 32 will there be any problems given that m home was made using 64 save files and other things?

[SunnyRabbiera]

I think Kubuntu ibex has KDE4 set up to overwrite KDE3.
If you dislike KDE4 as much as I do I would not upgrade to ibex.