There are some apps like usplitter, fogger, lightread and so on in Ubuntu 12.04. Is there a way to find out now if those will appear again in the final version of Ubuntu 12.10?
12.04 is LTS (Long times support) this means that there will be support for this version for several years this logically means that programs included in the package (not in the apps catalog) will get updates as long there are updates outthere. And in an improbable case if for whatever reason they will not be in the package in future versions you can manually install them at any time.
Latter edit: Actually looking further into the matter fogger, lightread are available via http://en.wikipedia.org/wiki/Ubuntu_Software_Center and not installed by default in 12.04 distribution package.
It seems you can search the available apps for 12.10 via apps directory catalog, you can select there what apps will be available for which versions , this link is a search for fogger in 12.10 and it seems will not be there in 12.10 neither lightread but then maybe the catalog for 12.10 is not yet updated.
The applications directories for 12.10 have not been updated yet. We will have to wait for the release to see which applications will stay or are updated. There can't be a fixed rule for this - imagine an application that makes it to the repositories in the meantime.
For the applications in question there are however some indicators that speak in favour of inclusion in 12.10: