I shortly updated mit Prospect 4K to Neo 4K 5.1.0 because the Prospect line will be dicontinued. I use Premiere Pro CS3 and what I see now in Premiere Pro is that the splash screen on starting premiere pro is still Prospect 4k and the presets are also Prospect 4K presets. Is this normal?

Yes, that is normal. We rolled the old CS3 Prospect components into Neo unchanged.

Thanks alot for your answer. OK so I am happy and the work can go on.
Best regards.
Fritz