Got to your account to retrieve the download
 
https://shop.presonus.com...ne-3-Digital-Downloads

Careful, myself and some others have broken S1s after applying the update. Something about Melodyne integration. The powers that be are aware, so I'd advise playing safe and waiting for a fix.

3.3 Pro update worked fine here--with Melodyne 4 Studio onboard

seems to work fine for me as well

I furthest from being a Cakewalk fanboy but it seems off the DAWs I have of late, Sonar's updates are the most impressive.
 
My Studio One seems to be hanging on my Aria integration, crashed on the manual update as well.  I still use Melodyne whatever version 2 (the $150 version) and don't care to upgrade.
 
Others report the same buyer beware! 

What's the Aria integration with S1? Must have missed that😀

LAGinz25
What's the Aria integration with S1? Must have missed that😀

When you launch S1 it shows everything it's loading.  

LAGinz25
3.3 Pro update worked fine here--with Melodyne 4 Studio onboard

No problems on my end either.

Ok this is a s1v3 vs splat question. Is s1 more stable? I have been experiencing crashes with splat and thinking of getting s1. But I heard s1 midi editing is less powerful than splat? Can I get some feedback from those of you who uses both? I am a 95% midi and softsynth kind of user.

I use Studio One occasionally for audio-only projects; its MIDI implementation is a very poor second to Sonar's in my opinion, for example if you use outboard synths and drum machines - there is no instrument definitions facility for example, enabling you to select patched from inside the software.  I find it slick and fun to use for audio only projects though. 
 
Stability is a difficult one. That can depend very much on other aspects of each user's setup. In my case, thinking about the last few months, I've had more inexplicable crashes with Sonar than Studio One, in fact I can't really remember when I last had one with S1.