I was planning to sit for PMP by the end of this year (November/December). I've through some books, prepared my experience documentation, obtained initial approval from supervisors, and set plans to get membership, and (if audit goes well), sit for the exam within 6 months. 

However, few weeks ago, I noticed a new announcement by PMI stating the [PMP is changing in 2015](http://www.pmi.org/Certification/Project-Management-Professional-PMP.aspx). When you read more, you find that the changes are not finalized yet (will be in 3 days form now), and that the last exam date for the current version is 1st November. 

I do not expect I will be sitting for the exam before this date. Hence, most likely, I should start preparing for the new version. But at the same time, I do not know when to start that, because I'm not sure if the materials for the new version will be available soon or not. For example, I decided to prepare using PMBOK and another book called [Head first PMP](http://rads.stackoverflow.com/amzn/click/1449364918). But the current versions of each up to now cover the current PMP version and not the coming one.

Given the above information, my questions is, how wise is preparing for PMP this year? Will I suffer any serious changes (lack of material, examples ... etc), or it is not really that be significant? PMI changes PMP every couple of years. Have any one experienced any of these changes and their effects? What is the advice?

![enter image description here](https://i.stack.imgur.com/UGSaY.png)