The Cakewalk website has contradictory information concerning what extras are included with Home Studio.
 
The comparison chart on this page, https://www.cakewalk.com/Products/SONAR/Versions indicates Cakewalk Sound Center and Cakewalk TTS-1 are not included.
 
The comparison chart on this page, https://www.cakewalk.com/Documentation?product=SONAR&language=3&help=Comparison.html indicates Cakewalk Sound Center and Cakewalk TTS-1 are included.
 
Which is correct?

I asked Cakewalk Presales about this. Their reply was SONAR Home Studio includes 6 instrument plug-ins: TTS-1, Studio Instruments Suite (Guitar, Drums, Piano and Strings), and Rapture Session. They also said they were forwarding this issue to both the web and documentation groups because both have the instrument list wrong.

I just checked my version of Home Studio, I looked in the instrument folder and  then on the list in CCC.   Rapture is not included on the list under Home studio.  
 In my instruments folder are  TTS-1,
and the Studio Instrument suite=  SI Bass, SI Drums, SI electric piano and SI strings. 
 
If Rapture is included as a separate download it is on my general download list in CCC. I just assumed it was there because of my ownership of Platinum. So it is not clear if it is included
 

 
 
 
 
 
 
 
 
 
 
 
 
 

Rapture is not Rapture Session. Rapture is not bundled with SONAR Home Studio, Rapture Session is. FWIW both Rapture and Rapture Session are separate installers. Neither is nested under any version of SONAR.

Scook,
Thank you for investigating and sharing the correct answer.  Also, please tell PreSales thank you for ensuring that both the website and documentation will be updated with correct information.
What product hosts the four studio instruments since Sound Center is no longer included with Home Studio?

Cakewalk Sound Center has nothing to do with the Studio Instrument Suite. The SI plug-ins are separate dlls. CSC is a 32bit DPro and Rapture program player. Rapture Session effectively replaces CSC. It is a 32/64bit plug-in that plays CSC, DPro, Rapture and Rapture Pro programs.

Steve- my screen shot was to show what is included with the basic Home Studio download in CCC. 
All the other installers I am not to clear what they came with as my list has everything that comes with all versions of Sonar on it right now.  
There is Rapture and Rapture session. I assume they both came with my Professional and Platinum versions. So this is what I'm saying, it's not clear if I also would have received Rapture with Home Studio. 

Rapture is bundled with Platinum. Rapture Session is bundled with every version of SONAR including SONAR Home Studio.

Thanks. 

Johnny (Cactus Music),
 
Thank you for the screenshot and clarification.  It's interesting to me that TTS-1 does not show up in your screenshot.
 
Thank to you and to scook for responding.