Apple will do what they do when they do it. Everything is conjecture and not even worth yakking about, IMO. (But, I'm gonna yak about it anyway!)
I DO believe they will come out with some kind of an update of some sort within a 3 month time frame - that's a safe enough bet. What I'm most curious about is what that update will bring us.
Here's my list - pure conjecture, part wishing, part based on what I've seen complained about most often:
1. Improved earpiece volume for calls.
2. Ability to reply to emails with attached in camera photo.
3. Wider ringtone options. (whatever that may mean)
4. True battery level while charging - battery icon now goes to "full".