Microsoft has recently released Cumulative update 9 (CU9) for Microsoft Dynamics AX 2012 R3 very recently and here some information around it.
The Knowledge base (KB) article number is 3063879 and the Build number after installation would be 6.3.2000.326. There is lot of information on TechNet – here is the link.
CU9 is the second Cumulative Update for Dynamics AX 2012 R3 after CU8. It only applies to R3 at this moment. However Microsoft has made the Cumulative Update 8 for Dynamics AX 2012 R2. There by enabling users of AX R2 customers to directly upgrade to AX7 in the near future.
In addition to containing several hotfixes that have been recently released, CU9 also includes new features across several different module sets. The details on the new features can be found in the above TechNet article link - do look to the bottom of the page of the “What’s New” link to see the content that’s specific to CU9.
Starting with Dynamics AX 2012 R3, you can now slipstream the update using Microsoft Dynamics Lifecycle Services. The step by step process of doing so is detailed in the Installation guide from Microsoft – http://go.microsoft.com/fwlink/?LinkId=613553
For a detailed walkthrough of the installation process, please check this video: https://www.youtube.com/watch?v=gNg3pHWxoik&feature=youtu.be
Note: The best part now with CU9 is that you can actually choose the updates you want to install. This is very helpful in case you have an ISV solution on top of the standard in your implementation. You can wisely choose the update based on Customer requirements and not disturb the underlying code used by the ISV code. I strongly recommend to watch the above video in order to get a visual sense of the installation process.