Lightroom 4.4 RC and ACR 7.4 RC - Tests/Results

I am sorry in advance for my ignorance, but can somone please tell me if they know if Photoshop 5.5 can be updated with this latest version of Camera Raw with all the new stuff for the X-E1.

I have been looking through the Adobe site and the news does not look good but I might not be reading it right. Also when I click on "check updates" it says my Photoshop is up to date but it still can not open my X-E1 raw files.

Right now I am converting to tiff using the software that came with the camera then moving to Photoshop to process my photos.

Will I need to go to Photoshop CS6? or can I get my CS 5.5 updated? If I can then how?

Thanks anyone.