Although this book makes references to the current state of the App Store (some of which will become outdated as the App Store evolves), it is designed to be read as a business guide for finding your niche, assembling a team, developing, and marketing an app at any time, now or in the future.
Here is a small checklist of some of the important topics covered:
Current and future trends in the App Store
Methods of competitive research
App development costs
App Store business models and customer expectations
Assembling a development team and outsourcing
The stages of app development (including soft launch and post release)
Marketing your app
Social network integration within your app (including Facebook, Twitter, Game Center, and more)
Effective ways to maximize social media in your marketing campaign
Post-launch maintenance and support options
If any of these are of interest to you, then you should definitely be reading this book.