I just installed 2016.08.0.30 and as soon as I got to work I noticed I cannot stretch-shrink audio clips anymore.
 
I use this feature constantly whilst post-processing, so this is a big deal for me.
 
Steps to reproduce:
1. Open a new project and drag-drop in any audio clip
 
2. Position mouse over right-hand-side of clip. Cursor turns into a "C"
 
3. Press left mouse button and drag the edge of the clip. This still works
 
4. Press "Ctrl".
Expected: The edge should turn yellow and the audio inside clip should stretch/shrink.
Result: Does not work. It just moves the edge of the clip as in 3.
 
5. Press and release the "Alt" key.
Result: Now nothing works anymore. Not even the "C" appears over the clip edge (as per in 2.).
 
 

As per the release notes, use CTRL+SHIFT now.

There is no problem. As it says in the eZine for the 2016.08 update:
 
NEW TIME-STRETCHING PROTOCOL
 
Previous versions used the same cursor to slip-edit and stretch, which could be confusing— especially because there already was a dedicated stretching cursor (formerly, a yellow line added to the clip edge indicated that stretching was occurring). Now, the same stretch cursor appears for all stretching functions. To time-stretch a Clip or Take, you now need to hold both Ctrl+Shift instead of only Ctrl when click+dragging on a Clip or Take edge to stretch.

H'm. Funny thing is, I already went over the e-zine.
It's easy to overlook. OK, yes, new hotkeys, new cursor.
 
But pressing and releasing the Alt key killing the cursor must be a bug, no?
(see my point number 5)
 

What were you expecting it to do? 

I expected it to enable the snip tool when pressed...
...and on release I expected everything to return to normal.
 
I did NOT expect it to disable the stretch/shrink function.

Anderton
There is no problem. As it says in the eZine for the 2016.08 update:
 
NEW TIME-STRETCHING PROTOCOL
 
Previous versions used the same cursor to slip-edit and stretch, which could be confusing— especially because there already was a dedicated stretching cursor (formerly, a yellow line added to the clip edge indicated that stretching was occurring). Now, the same stretch cursor appears for all stretching functions. To time-stretch a Clip or Take, you now need to hold both Ctrl+Shift instead of only Ctrl when click+dragging on a Clip or Take edge to stretch.

Where does the eZine live?
 

Here are is the link to Cakewalk's rolling updates page.  Scroll down to "SONAR Update History".  The individual sections for the given releases have their respective ezines therein.  The one you're after is SONAR 2016.08

https://www.cakewalk.com/Products/SONAR/Rolling-Updates

Would be nice to be able to get the eZine emailed when available for flighty airheads like me, 

Why did they do this to us?
Was that necessary?
 
Someone inside please explain the thinking behind this as we no have to unlearn muscle memory we have known for years please.
 
I see no reason to do this.