I have Lightroom 4.4 and am not willing to buy the 5 update because it has nothing I could use – except support for new camera RAW formats. Then I see that the DNG converter is available for free download, and I could actually use that to convert RAW images of a new camera model to DNG and then use them in Lightroom as usual. That adds an extra step to the workflow (which might be possible to automate), and I'd lose the original RAW file (because I don't want to keep twice the file size).
So, is it possible to teach the new file formats to Lightroom 4 as well?
Photoshop CS6 recently received a Camera Raw update that enables it to open such new files. It's only Lightroom, of the same age, that seems to be stuck in the past.