I predict that the keynote will about Mac OS Lion, iOS 5 and iCould … OK we already know that, so here is what I think that really means.

iCloud

I think that iCloud will give users the ability to stream any of their iTunes purchased music tracks and videos to an iOS/Mac OS device, for a small subscription fee ($25-$50 per year). I don’t think they will do what Google and Amazon are currently doing, whereby they allow users to upload their own music regardless of where the files have come from (e.g. burned from a CD), and then stream this to users devices.

I also think that iCloud will incorporate the MobileMe service, and what would make things very interesting is if Apple do something smart with iDisk. If Apple makes iDisk available to every iOS application via a nice and simple API, it would solve two major problems.

• Getting files on and off of iOS devices
• Moving files between applications

At the moment a lot of iOS applications use Dropbox for this, but it doesn’t have to be this way, and Apple will probably want a piece of this pie.

Mac OS Lion

I don’t think we (developers) will see anything new from Lion in this Keynote (other than anything iCloud related), but they are likely to go over the previously unannounced features such as Version and AirDrop. I think the GM will be given to developers at WWDC, and we will be given a release date … I think the end of July.

iOS 5

Notifications, Notifications, Notifications. I think Apple have to deal with how applications show notifications. At the moment they force the user to deal with them there and then … which may have been the simplest option to implement in iOS 1, but every other mobile OS has a better solution in comparison to iOS.

I think in tandem with the new notification system the springboard will get a small update to accommodate them. I’m not expecting anything major but support for widgets would be nice.

Over the air updates … I think this may finally happen. For me having to plug my iPhone into my Mac for it to upgrade the OS isn’t really an issue, it’s the syncing of apps and music (which I do regularly) that is the major issue. If they allow me to sync over WiFi (or something clever with iCloud) then I will be extremely happy with this as an iOS update.

What there won’t be

There will be no iPhone 5 (or iPhone 4S or whatever it is called) shown at WWDC, neither will there be any iPad hardware updates. I think the only hardware that we might see unveiled is a Thunderbolt MacBook Air, or a refresh of the Time Capsules to do something clever with iCloud … it does have a hard drive after all.