I can confirm that Session Drummer is a part of my Platinum installation.
 
 

Sorry for the poor English It was as told earlier that AD2 is "in addition to SD3". All your presets / kits for SD3 will be of full use to you.
Regarding dsf files, I think Z3TA can use them.
All the best. 

gyoungdahl
So my Dimension Pro 1.5 (all 3 of them :-) ), Melodyne Essential, Mellotron and Vintage Key sound packs (for Cakewalk Sound Center) and Rock Legends Kit 3 (for Session Drummer) are all no good now?  Sheesh, I never even heard the Mellotron or Vintage Keys sounds, and I didn't even realize I had a Melodyne thing.
 
Maybe I need to go and update my old DAW (still running X2, I believe) and update it so I can make use of those.  Actually I was hoping to retire that DAW once the new one was up and running.
 
--
Greg Y.
 

I never said that. If you have access to the installers, the CSC should install and be of use within Platinum.
 
Melodyne Essential is part of the Platinum install.
 
Dim Pro (latest version) is also part of the Platinum install.

Hi Bapu,
 
    Sorry, I guess when you said not to waste time with anything before 2016.04, I though all the older stuff was obsolete in the Platinum environment.
 
    Regarding your comment (if not quite a "suggestion") about installing from X1 on up to Platinum... Are there things (plug-in effects, synths, drum kits or ?) that are worthwhile that won't be there if I just install Platinum?  I have X2 on my old DAW, (and probably X1 - not sure exactly what is there - might even have 8.5 or so still there).  I've got the X3 available and presumably it will install on that system (IIRC I don't think that system is up to the Platinum minimum requirements).  So, can I "harvest" plugins or whatever from that box and add them to my new DAW?  Or perhaps Platinum has better replacements or alternatives for any of those?  About the only thing I can think of that I used a lot on mixes was the Lexicon Pantheon Reverb.  I assume Platinum either still has that, or has something better?  I used other stuff as well (compression, probably chorus and such), but nothing that thrilled me, so I assume whatever Platinum has in that regard will be at least of that level.
 
    My new DAW does have an SSD as the C: drive (256 GB or so I believe), so space may be of concern, but I think I could spring for a 1TB drive at this point and use True Image to transfer my install to that.  Then I could use the old one as an Audio destination when recording.
 
    You mention installers for the "CSC" (Cakewalk Sound Center).  Is that something that would have been an add-on to Sonar X* (or would be an add-on to Platinum)?  I don't recall purchasing anything additional like that, so maybe my Mellotron or Vintage Keys would never have worked anyway (until I figured it out and added that).  Is that something that is still available, or is there some alternative in Platinum (or as an add-on) that would let me use those sounds?  Zarrg71 suggests that Z3TA may use dsf (digital sound font?) files.  I assume that may be the format of the Mellotron and Vintage Keys packages?  Does that (or can it) just play the samples straight up, or does it have envelopes and filters that take the waveforms and contort them (maybe the answer is "both").
 
Thanks guys for your responses.  Obviously I've got some things to investigate, but your perspectives definitely help!  If anyone else has insights, don't hesitate to chime in :-)
--
Greg Y.

You can have all SONAR versions installed at one time, and use each of them (use advanced install, if you only want plugins). I think Ed (Bapu) suggested that you install them in order (X1, X2, X3), but that you should not be concerned about anything older in Platinum than 2016.04.  
All the best.

I found a link that seems to address most of my concerns, at least regarding instruments...
 
https://www.cakewalk.com/Documentation?product=SONAR&language=3&help=Plug-ins.4.html
 
I assume that this list pertains to current versions of software - some of the items in the list are listed as "Platinum Only", some say "Professional only" (followed by a better version saying Platinum only - such as Dimension LE is Professional only, and Dimension Pro is Platinum Only), and then some don't specify, so I assume they are included in all versions.
 
Among a long list of other stuff, it seems that Cakewalk Sound Center is listed (so it can use my Vintage Keys and Mellotron packs), and both Session Drummer 3 and Addictive Drums 2 are listed, so my Rock Legends Kit 3 is presumably covered.
 
There are a few Rapture listings there as well.  Apparently Platinum has Rapture (Professional has Rapture LE), and then there is Rapture Session (no version, so presumably in all versions?) which seems to support Cakewalk Sound Center expansion packs too (and Dimension Pro and Rapture Pro sounds).  Rapture Session also references "Rapture Pro" sounds, so apparently there are 3 Raptures, "Pro", just "Rapture" and "LE".
 
Hopefully I can find a similar link for effects/plug-ins.
 
Thanks all for your insights!
--
Greg Y.