Of course you want an iMac Pro! But do you really need one for your development work? Most of the iMac Pro videos and reviews seem to focus on video and audio editing, which are certainly tasks that make use of the many cores that are available (8-18).
But software development is also a Pro task. What benefits does an iMac Pro bring to a software developer?
Typically most people will opt for a computer that probably has four cores such as found in the i5 and i7 series. These are used in the popular Macbook Pro and iMac models, for example. Four cores sure sounds like a lot so why would a developer need more?