I know new Symbian version usually require new hardware and this new version will have RAM optimizations (which should definately help N97 with RAM issues). That may mean that manufacturers will need to rework flash memory design to make it comptabiele with OS 9.5 design.
Does that mean we're very unlikely to see 9.5 upgrade for N97?
Off-topic: I uninstalled all apps on my N97 from the application manager program and I also ran a format on my mass storage drive. I hard-reset N97 but original programs like AccuWeather and Facebook are not showing up! I thought hard-reset would restore all installed apps!