Guys! On a practical note.
I will be using my SPLAT for the foreseeable future as it is still the best damn DAW out there. However, I'm also previewing some other options, such as Reaper, Pro Tools and Mixcraft.
I would advise any of you who plan to keep on using Sonar to get over to your Login page at Cakewalk, take a screen grab/print to file all your serial numbers and codes, and download all the stetup files and instrument files you can. It will probably take you the best part of a day, but you never know when the servers will go down and the files will disappear. Remember, Sonar is not just the DAW, it is also all the software and fx too which can be merged to any future DAW.
It's a lot to download, but if you archive it well, you'll save yourself heart-ache in the future. For example, I used Sonar Studio 8 up until migrating to SPLAT, and I see that all the fixes and update files for that have now disappeared from the servers.