Anderton
I don't think it's a situation where you have to stop using Sonar and start using something else. It may seem daunting to learn a new DAW, and it is, but you already know how to use a DAW if you use Sonar. A different DAW will have other features and lack some features, but there will be more similarities than differences.
 
Sonar won't die tomorrow and probably not for quite some time. So keep using Sonar, but start playing around with another DAW that interests you. Over time you may be surprised that it's not that difficult to be fluent with two DAWs.
 
I chose Studio One because I've been using Studio One's Project Page functionality for years, and know the Song functionality reasonably well. I also wanted a cross-platform program because I have a MacBook Pro for travelling. So if Cakewalk gets bought and Sonar survives, great - but I'll also be fluent with Studio One and when I start a project, I'll decide which one will be best for the task at hand.
 
It's like an instrument. My primary instrument is guitar, but I also play keyboards. Most of my songs are born on guitar, but many are born on keyboards. Knowing how to play both has benefited me far more than simply being proficient on one or the other.

I went to Studio One, of course very unhappily.
 
The last thing I wanted was to change DAWs, after 30 years of Cakewalk.
 
But I can tell you Studio One has a fresh feel to it. Not everything happens the way I want, but it is fast and reliable. You can set your latency to be very low and it works without weird problems. It is stable and fast.
 
My old projects might be toast but the new ones on Studio One will be new adventures that I expect will be very good.
 
I just hope Gibson does not buy Presonus

"Don't panic" gets mentioned every five minutes.

I want to know who is panicking? I'm not I'm just annoyed esp when the writing on the wall was obvious, but have accepted and moved on to another DAW for new projects. Sonar is around for old projects and fact is that almost everything that isn't available in Studio One but is in Sonar can easily be worked around for my needs, often by using other third party solutions... and it's just so much better. It's not much really that's different.

People are running around saying Gibson/Cakewalk is going to do something to make sure products will be activated as per FAQ, but we don't exactly know what it is or what the specific products are. All we have is conjecture and assumptions and no official statement.

Also those who have read up about Gibson's current financial situation may also be worried that if it goes down the carpet may be pulled under everybody's feet... so don't panic then.

Still do the abrupt wake up at 4am, random concerns, the usual worries...world coming to an end and all,etc. Cakewalk/SONAR "demise" still in the bad dreams mix, even though it opens and works just fine. It's not a panic,but it's a reality.  So we purchased Samplitude Pro X3, already have S1 3.5. Yet, we totally prefer Sonar and will use it with much fun and glee,until.... ? It's such a Dam# It! moment..

pharohoknaughty
I just hope Gibson does not buy Presonus

 
Gibson can't afford to buy Presonus.
They are not interested in them either. Consumer electronics seems to be where they are headed. 
Maybe they should have just stuck to making guitars.
 

I know this sounds awful, but I'm almost grateful for what happened (I should imagine Cakewalk employees don't feel the same way) - if it didn't happen, I would still be plodding along with Sonar and all of its problems hoping for fixes that probably weren't coming, thinking that "jumping ship" was a pipe dream, that I would never take the time to learn another DAW. I'm still using Sonar to finish old projects although I honestly don't know if I'll get all of them done given how problematic, buggy and unstable Sonar is for me. But test driving Bitwig has made me realize just how much greener the grass is in many ways, and it's been a treat to mess with a fresh young DAW that's been built on brand new code & design from the ground up, paying attention to the shortcomings and mistakes of DAWs gone by. There's loads of stuff in newer DAWs like Bitwig that will make you think wow, Sonar could never have done this without an extensive rewrite and design rethink. 
 
I used to listen to people talk about using multiple DAWs on this forum and think, why bother? Surely that's more trouble than its worth. But having test driven Bitwig and to some extent Reaper, I now understand that. They really do have their individual strengths and no one DAW is a jack of all trades. At one time I demoed Studio One and was really impressed with how well designed and snappy it is, and I would have gone with it now like so many other people here but I was just so intrigued by the futuristic design of Bitwig. If I had more spare cash lying around I probably would have gone with S1 as a sort of backup/"normal" DAW to compliment Bitwig, but I'll probably save the $$$'s and use Reaper for that instead. We just ought to be thankful there are so many choices these days. 

I had a play with Harrison Mixbus, Reaper and both didn't appeal to me. I was going to try Studio 1 but settled on Samplitude Pro X3 and was pleasantly surprised by it. I'm kind of bit by bit getting around it but I keep coming back to Sonar. I can just 'fly' around it without thinking much...it's just so intuitive after many years of learning about, tutorials, reading about ideas and issues on this forum...but now SPX3 is kinda slowing down the creation/experimentation time as I've got to stop and figure out where 'x' thingie is that I want to manipulate, change, modify etc. I'm afraid I'm addicted to Sonar and unless I commit to SPX3, it'll take a loooong time to figure it out to the same degree as Sonar. But as Sharke said, it's cool to check out what a different DAW can do in relations to Sonar, which I've only used for years. I've been spoiled  by it though. 

I'm transitioning to Cubase Pro 9.5.  I see a lot of people going for Studio One, but if you want to know why that wasn't even close to an option for me, Google "Presonus groundbreaking ceremony Louisiana" (images) and you will see my answer.

SF_Green
I'm transitioning to Cubase Pro 9.5.  I see a lot of people going for Studio One, but if you want to know why that wasn't even close to an option for me, Google "Presonus groundbreaking ceremony Louisiana" (images) and you will see my answer.

Its got nothing to do with how great a DAW it is though

Jeff Evans

SF_Green
I'm transitioning to Cubase Pro 9.5.  I see a lot of people going for Studio One, but if you want to know why that wasn't even close to an option for me, Google "Presonus groundbreaking ceremony Louisiana" (images) and you will see my answer.

Its got nothing to do with how great a DAW it is though

No, but it has everything to do with who I am willing to give my money to.

Bflat5
 
get used to something new now instead of later?
 

 
Just that really. Still using Sonar, and gently learning Studio One in between.