My upgrade struggle:
I've had the $9.99 subscription to Creative Cloud installed on my iMac for about a year but never installed the version of Lightroom that is distributed via Creative Cloud. Rather, I have been using a version of Lightroom 5 that I had before I got the Creative Cloud subscription. Mid-morning after watching Scott Kelby and RC hype the new version of Lightroom CC on the Lightroom Killer Tips broadcast I noticed that my Creative Cloud application had a version of Lightroom CC ready to install so I installed it. But it wouldn't run. It just flashed the menu bar and didn't come up. I thought the problem perhaps was perhaps because Lightroom 5 was still installed so I uninstalled Lightroom 5. Still didn't work. After taking a long bike ride to cool off and think about what to do, I decided to upgrade my Lightroom 5 to Lightroom 6. Soon as I installed the Lightroom 6 update Lightroom CC started to work. Huh!! And when it converted my 2015 Catalogue it left out the last few months... #$&! I'm finally running on Lightroom CC but I think Adobe did a really crappy job with their update process.
Be careful with your upgrade:
This is the first time in probably 20 years of using Adobe products I've had any problems upgrading. So be warned: If you haven't made the transition, take is slow and don't rush. Looking at the Adobe Lightroom Forum, I'm not the only one that had the problem I described above. Many folks on the forum are saying I updated, but it doesn't run! I was apparently happening on Windows and Mac OSX.
The future of lightroom as a stand-alone product:
During Kelby's Lightroom broadcast this morning, when someone asked him if this was going to be the last version of Lightroom that you could purchase just Lightroom without getting a Creative Cloud subscription, Scott's reaction was interesting. He said, "well, the fact that only Lightroom CC supports mobile devices is an indicator... the future is mobile devices!" I think you can see Adobe's desire to only have Creative Cloud applications. On their website just try to find how to upgrade to Lightroom 6. My prediction is this will be the last time you'll be able to get a non-Creative Cloud version of Lightroom.
Once I cool off and quit swearing at Adobe I'll cover some of the improvements. I think the speed improvement will be the biggest improvement. Laura Shoe's video above covers the changes.