Yes, we'll be tackling 9i for the 5.0 mark (if that's what we call it). I'll also propose we only support PG 7.2, not 7.1, with that release.
So we'll have lots of discontinuity to go around, plenty for everyone.
The Oracle version will be the worst, the package stuff just requires replacing existing packages in your active install and we can hack packages to use the new names. But ... anyone who's done customization will have to hack their own code to use the renamed functions and procs.
Ugh.
