If you are a Creative Cloud subscriber, however, Lightroom 4 is included in the package deal, along with all the other apps from Adobe Creative Suite CS6.
I signed up for Creative Cloud earlier this month. Being an existing Production Premium customer, I was able to get the introductory rate of $29.99 per month. I’ve installed a number of CS6 apps with zero hiccups thus far. If you aren’t an existing Creative Suite customer, you can still get Creative Cloud for $49.99 per month if you commit to a one year subscription.
Of course, I had already upgraded to Lightroom 4 and it is a solid update to an already fantastic RAW image processing application. If you’re on Creative Cloud already and you aren’t using Lightroom for your image processing, nothing is stopping you now. If you’re not on Creative Cloud, this is just the more incentive to pull the trigger.