I just got my reply from Sonoma.  I own KitCore Deluxe and most of the additional packs.  Basically it looks like I can upgrade to DrumCore 3 fro 100.00 using their coupon and another 100.00 to pr-eorder v4.  Since I'll never use the audio loops it doesn't seem like it's worth it.  All I really want is the 64bit GUI.

I'm in the same situation - So if I understand this correctly, you have to spend $100 to upgrade to Drumcore 3 (which I assume will be as unusable as my existing Kitcore) then wait for however long, I expect many months, then spend another $100 to get a program that has features I'll never use, just to get,  as you say,  a working version of what you have. Emmm, not very tempting.
 

Bajan Blue
I'm in the same situation - So if I understand this correctly, you have to spend $100 to upgrade to Drumcore 3 (which I assume will be as unusable as my existing Kitcore) then wait for however long, I expect many months, then spend another $100 to get a program that has features I'll never use, just to get,  as you say,  a working version of what you have. Emmm, not very tempting.
 

Except that you have to fork over the 2nd $100.00 right away as a "pre-order".

Looks like if you get DC3 right now, the upgrade to DC4 is free.
 
From Sonoma site
 
Purchase DrumCore 3 or DrumCore 3 Deluxe now through the DrumCore 4 launch and you will get the DrumCore 4 Upgrade download for free ($99 value). You will also receive a Free DrummerPack DVD or Download ($69 value) within 3 days of verification from support. You will be emailed within 3 days to choose any DrummerPack from this list for free (shipping rates may apply).

gmon72
Looks like if you get DC3 right now, the upgrade to DC4 is free.
 
From Sonoma site
 
Purchase DrumCore 3 or DrumCore 3 Deluxe now through the DrumCore 4 launch and you will get the DrumCore 4 Upgrade download for free ($99 value). You will also receive a Free DrummerPack DVD or Download ($69 value) within 3 days of verification from support. You will be emailed within 3 days to choose any DrummerPack from this list for free (shipping rates may apply).

I don't think that applies to upgrades - just new purchases.

HMM.  Elsewhere on the site it says this, which seems to say two different things 1) pre-order DC4 and 2) last sentence, verified user will be given the DC4 upgrade download for free.  I would think it would make sense to get the DC4 upgrade for free, but then again not everything makes sense!  :)  May be worth shooting them an email to clarify.
 

• DrumCore or KitCore User other than those above who wants DrumCore 4:
  First upgrade to DrumCore 3 or DrumCore 3 Deluxe. For pricing, please contactsupport. Tell them what email address you used to register your current product, and what you would like to upgrade from and to. If you qualify, they will respond with DrumCore 3 Upgrade pricing. Register DrumCore 3. Then pre-order the DrumCore 4 Upgrade. You will also receive a Free DrummerPack DVD or Download ($69 value) after verification from support. You will receive information about how to get your free DrummerPack download or DVD from this list ($69 value) within 3 days. DVD shipping rates may apply. US shipping only. The verified user will be given the DrumCore 4 Upgrade download for free when it launches.

gmon72
HMM.  Elsewhere on the site it says this, which seems to say two different things 1) pre-order DC4 and 2) last sentence, verified user will be given the DC4 upgrade download for free.  I would think it would make sense to get the DC4 upgrade for free, but then again not everything makes sense!  :)  May be worth shooting them an email to clarify.
 

• DrumCore or KitCore User other than those above who wants DrumCore 4:
  First upgrade to DrumCore 3 or DrumCore 3 Deluxe. For pricing, please contactsupport. Tell them what email address you used to register your current product, and what you would like to upgrade from and to. If you qualify, they will respond with DrumCore 3 Upgrade pricing. Register DrumCore 3. Then pre-order the DrumCore 4 Upgrade. You will also receive a Free DrummerPack DVD or Download ($69 value) after verification from support. You will receive information about how to get your free DrummerPack download or DVD from this list ($69 value) within 3 days. DVD shipping rates may apply. US shipping only. The verified user will be given the DrumCore 4 Upgrade download for free when it launches.

They emailed me a $100 off coupon since I own KitCore Deluxe.  That brings the upgrade to $100 for the standard DC3.  Then you have to pre-order the DC4 upgrade for $100.  The way I read this it's $200. I'll reply to the email for clarification.

Bajan Blue
(which I assume will be as unusable as my existing Kitcore)

Why is Kitcore unusable for you?

vintagevibe

gmon72
HMM.  Elsewhere on the site it says this, which seems to say two different things 1) pre-order DC4 and 2) last sentence, verified user will be given the DC4 upgrade download for free.  I would think it would make sense to get the DC4 upgrade for free, but then again not everything makes sense!  :)  May be worth shooting them an email to clarify.
 

• DrumCore or KitCore User other than those above who wants DrumCore 4:
  First upgrade to DrumCore 3 or DrumCore 3 Deluxe. For pricing, please contactsupport. Tell them what email address you used to register your current product, and what you would like to upgrade from and to. If you qualify, they will respond with DrumCore 3 Upgrade pricing. Register DrumCore 3. Then pre-order the DrumCore 4 Upgrade. You will also receive a Free DrummerPack DVD or Download ($69 value)

They emailed me a $100 off coupon since I own KitCore Deluxe.  That brings the upgrade to $100 for the standard DC3.  Then you have to pre-order the DC4 upgrade for $100.  The way I read this it's $200. I'll reply to the email for clarification.

If that is the case, there is no discount at all because as a new customer you can buy Drumcore 3 for $199 and get a free upgrade and drummer pack.
they say

after verification from support. You will receive information about how to get your free DrummerPack download or DVD from this list ($69 value) within 3 days. DVD shipping rates may apply. US shipping only. The verified user will be given the DrumCore 4 Upgrade download for free when it launches.

 
So if you use the Kitcore upgrade will you be a verified user? - Its well confusing!
 
The other thing I dont like in this deal is its not at all clear what one will get with Drumcore 4. It says extra kits and genres but there is zero detail. If its $100 for the upgrade and there is some worthwile new kits (not loops) I may be tempted. For $200 its going to have to offer a lot!

Leadfoot

Bajan Blue
(which I assume will be as unusable as my existing Kitcore)

Why is Kitcore unusable for you?

In my case I would say its partly useable. I could never get it to run with bitbridge and there are a number of issues using Jbridge. The groove preview does not sync to project tempo and there is other flakeyness. There is some nice content but the general instability in 64 bit makes me reluctant to use it.
 
And yes if I was desperate I could mess around and install 32 bit Sonar.