If copy and paste is limited to just a few select Apple supplied apps, what's the point in having Tuesday's thing geared toward developers? It's not like they'll need a new SDK to tap into it, because they won't be able to use it
I hope it can be used in any text area, label, document, etc. Universal clipboard. And a new Springboard has no impact on developers either. The only thing that the OP mentioned that might be developer-related is the background capabilities, if they are in fact true (and I'm so hoping it is). It does sort of go along with that report a month or so ago that background applications were coming and current iPhones will get 1 or 2 background apps, but the new iPhone will get more due to better hardware.