Nokia N8 just got a Software update, the update is called Apps update 1.0 and is basically a performance update for the built-in apps.
Unfortunately there is no changelog available for the update yet. Will update the post when I come across it. Unfortunately this is not a Firmware update so don’t expect those touch lags and rotation lags to just go away.
I am still looking at what performance changes the update has brought, will update this post with more information shortly.