In order to pursue further innovations in image processing and workflow technology, the next release of Adobe Camera Raw (v 9.1.1) will be the final version available for use with CS6. Customers can utilize the free Adobe DNG Converter utility to receive the very latest camera support for CS6 and older versions of our software going all the way back to Photoshop CS2 and Lightroom 1.0. Here is the official statement.
What this means, is that to get all the latest improvements to Photoshop and camera profile support beyond the ACR version 9.1.1 (the current version of Adobe Camera RAW) you will need to be a Creative Cloud subscriber. Based on the answers to the comments in the announcement this apparently doesn't apply to Lightroom. Don't ask me to explain that since ACR is used in both Lightroom and Photoshop. There's a post over at slrlounge.com That gives some more interpretation of this.
The bottom line is that if you are a Photoshop and Lightroom user don't expect the current situation, where you can purchase Photoshop and Lightroom outside of a Creative Cloud subscription, to last forever. The $9.95/ month photographer subscription has been fairly well received and it's pretty clear that eventually Adobe will move to subscription-only for Lightroom and Photoshop. No big surprise really, it's just that there are a lot of people that don't want to hear this.