I wouldn't recommend disabling driver signatures ... other than overclocking one's CPU as #1 source for BSOD, drivers are the #2 source of BSOD.
 
It would be wise to wait for official support for Windows 10 from the manufacturer.  
 
Just curious, what's in Windows 10 that is a must have now?  Professionally, I develop software for Windows 10, 8, 7 so I use the various flavors for testing, but from a programmers perspective I can't say I see anything in Windows 10 that would make my software any better (for end users or myself).  On the performance front there are marginal improvements that may show up as a slight bump in performance testing software, but in real world usage they wouldn't make any difference for other applications (like Sonar, games - except DX12 games, Video - Adobe suite, animation - Cinema4D, etc.).
 
Other than Windows 10 being "different" what's actually there that folks MUST have now ... or is it just because it is different?
 
Anyway, I definitely do NOT encourage disabling of driver signatures as that's a common place for hackers to exploit because driver signatures provide considerable system wide access to any and all resources.
 
Cheers, Rob.

I'll post this here again from the email I was sent in June. HOpe nothing has changed.
 
 Roland Product Support (Roland Corporation U.S.)
Jun 12, 8:48 AM
Hi CJ,
We sent a request for updated drivers to our corporate Roland/ BOSS headquarters in Japan. At this time, they have not informed us regarding an updated driver. We hope to have this information soon after Windows 10 has its official Public Release and not just the Preview Release .
Sorry about that.
Kind regards,
Roland Product Support

Hi Dustriplin - no, you have to hack the inf after updating to win 10...
 
and no, not hacking the existing inf file in system32.
 
Download the latest 8.1 driver for your V700.   V 2.02 I believe.
 
Unzip the file and where you've extracted look in: \vs700_w81d_v202\vs700_w81d_v202\Files\64bit\Files\
 
In there you will find RDIF1089.inf.  This is the file you want to edit.
 
Once edited & saved, turn-off driver signing, as previously explained.  After you've booted up with driver signing off, make sure your interface is disconnected from the USB connection, or powered off.  Then run setup.exe from the VS700_w82d_v202 directory and install as you would normally.  When prompted plug in/turn on your interface. (Note, if you've already installed the driver before, the install tool may prompt you to uninstall and reboot - if this happens, you'll have to turn-off driver signing and reboot again!)
 
Once detected, you should get a warning about installing unsigned drivers.  Just accept the risk and let the driver install.
 
Hope this helps,
Mack

IT WORKED!!! I have the 700 running right now in Windows 10.  Still testing it for stability and have a few things I have yet to install... but so far so good.
 
Process I used (Many thanks to MACK for getting this far )  Will be a bit loquacious here, because I'm still not exactly where in this process I went wrong in my first attempt.  I took the liberty to go back up and copy much of Mack's helpful suggestions so we have everything in one place now.
 
My current system is an INTEL(R) Core(TM) i7 CPU  [link=mailto:920@2.67]920@2.67[/link]GHz with 9.00 GB (64-bit Operating System, X64-based processor) running Windows 8.1.  I'm running a fully updated version of Sonar Platinum Producer.
 
While still in Windows 8 I did the following steps (1-4):
1.  I uninstalled my 700 drivers and made sure my 700 was turned off (but didn't unhook it)
2.  I transferred my copy of the 700 V2.02 to the desktop.
3.  in the  \vs700_w81d_v202\vs700_w81d_v202\Files\64bit\Files\ folder I found the  RDIF1089.inf file and opened it in Notepad.  
4.  I cut and copied the following (from Mack's work above) into the [Machine] section:
;---------------------------------------------------------------;
[Manufacturer]
%MfgName%=Roland,NTamd64.6.2,NTamd64.10
;[ControlFlags]
;ExcludeFromSelect=*
[Roland]
;; Windows7 - Windows XP 64
;; not supported
[Roland.NTamd64.10]
;; Windows8
%RDID0089DeviceDesc%=RDID0089Install, USB\VID_0582&PID_00FD ; VS-700
%RDID0090DeviceDesc%=RDID0090Install, USB\VID_0582&PID_00FE ; VS-700 M1
%RDID0091DeviceDesc%=RDID0091Install, USB\VID_0582&PID_00FF ; VS-700 M2
%RDID0089DeviceDesc2%=RDID0089Install, USB\VID_0582&PID_0100 ; VS-700
%RDID0091DeviceDesc2%=RDID0091Install, USB\VID_0582&PID_0101 ; VS-700 M2
[Roland.NTamd64.6.2]
;; not supported
;---------------------------------------------------------------;
5. Installed Windows 10 (At the end I had a NVIDIA GeForce GTX 650 card that did not load up so my video looked wonky.  Also the second monitor isn't working because of this... but I'm ignoring this for now)
6. Went into the Device Manager (right click the Microsoft logo on the bottom left and open the Device Manager) and disabled everything that was in the sound, video, and game controllers folder (I have an onboard audio, MOTU 2408 PCI card, and NVIDIA options here that you might not have)
7. Turned off the driver-signing signatures:  I'll outline the procedure here for Windows 10.
-Find the power options on the Start Menu (the microsoft symbol in the bottom left).
-Hold down the SHIFT key while you click Restart.
-Once your computer has rebooted you will be able to choose the Troubleshoot option.
-Head into Advanced options.
-Head into Startup Settings.
-You will select the restart option.
-After it restarts again, you will be given a list of startup settings. The one we are looking for is “Disable driver signature enforcement”. To choose the setting, you will need to press the F7 key.
-Your PC will then reboot and you will be able to install unsigned drivers without any error message.
8.  Run the setup.exe from the VS700_w82d_v202 directory \vs700_w81d_v202\vs700_w81d_v202\Files\64bit\ folder and install as you would normally.  When prompted plug in/turn on your 700 interface. (Note, if you've already installed the driver before, the install tool may prompt you to uninstall and reboot - if this happens, you'll have to turn-off driver signing and reboot again!) (I did try this and it does work to uninstall and reinstall...)
 Once detected, you should get a warning about installing unsigned drivers.  Just accept the risk and let the driver install.
 
If all goes well, after a few minutes, drivers will install and the installer program will run to completion... 
 
I went and started my Sonar Platinum program and everything worked perfectly except for Addictive Drums which now didn't recognize my computer!  Reran the XLN Online Installer and added the computer to the profile and after some waiting had it running again in SONAR.
 
I now will install the NVIDIA graphics drivers and see about getting my monitors back and start using this puppy again... let you know if I run into anything else that's crazy...
 
Best
Dur