I disagree with Jason Brennan saying that split screen apps in iOS 8 are likely (even with Mark Gurman's track record, which was discussed recently on The Talk Show) but I agree wholeheartedly with his conclusion. I know I've mentioned this several times before but the #1 feature that iOS needs is better inter app sharing technology (note, I am not being specific about how this needs to be implemented as there are plenty of possible solutions). Please, please let there be some news on this topic announced at WWDC.
The lack of promo codes for IAPs has been a bit of an issue for a while now and has led to developers implementing various in-app workarounds to allow self generated codes to be redeemed. Looks like Apple are experimenting with IAP promo codes through their App Store Code Programme which has allowed large companies to distribute 100,000+ promo codes for paid apps.
Note that this is not available to developers right now but I do hope this is a sign that we might see a change to iTunes Connect promo codes to support IAPs soon.