Beta (release candidate) versions of new Lightroom and Adobe Camera Raw can be downloaded free now from Adobe Labs. You won’t get these updates using the normal search for updates in Adobe apps, as they are not the final release and can not be found on Adobe.com Downloads yet.
Links:
//labs.adobe.com/technologies/cameraraw7-4/
//labs.adobe.com/downloads/lightroom4-4.html
These updates will . . . → Read More: New Lightroom and ACR release candidates