With WWDC just around the corner in the first week of June it is exciting to anticipate the possibilities for IOS improvements not the least of which is improved inter application communication. This would go a long way in supporting capabilities which could really advance the possibilities for workflow improvements. 9to5Mac has an article that discusses the possibility for running two applications in landscape mode that could exchange information through drag and drop.
The following video is a suggested design for how this feature could work.
How Split screen multitasking might work in IOS 8