How hard is it to go to http://www.vmware.com, click Support > Compatibility Guides and then under Supported Guest and Host Operating Systems click View the Guest/Host OS tab on the VMware Compatibility Guide Web site.!? 
The compatibility guide shows no support (or mention) of Ubuntu 13.10 as supported but as you can see below the "What's news FAQ" does. For what its worth Windows 8.1 and Windows Server 2012 R2 were only released to Technet t or MSDN subscribers before t WS 10 released - not GA. Many people would be (rightly) leery of using a product a that stage. Licensing for one thing.
New Operating System Support
Support has been added for:
- Windows 8.1
- Windows 8.1 Enterprise
- Windows Server 2012 R2
- Ubuntu 13.10
Interestingly Ubuntu 13.10 has yet to be released and is not even at beta level. . Now I happen to be running VMware Player 6.00 on my unofficial (not supported) - although fully updated - version of Ubuntu 13.10 Server with multiple GUI's). Also my Technet version of Windows 2012 R2 RTM is working If I buy WS 10 today will I get complimentary support for Ubuntu 13.10 when it is released? O course this machine is experimental - what of those you will use 13.10 in production?. If there is another product that claims compatibility with an unreleased product please point me to it. Also many OS's are marked as "deprecated" For those that are interested here's one definition.
Definition: deprecated: adj. Said of a program or feature that is considered obsolescent and in the process of being phased out, usually in favor of a specified replacement. Deprecated features can, unfortunately, linger on for many years. This term appears with distressing frequency in standards documents when the committees writing the documents realize that large amounts of extant (and presumably happily working) code depend on the feature(s) that have passed out of favor
Would it be better to use WS 9 or earlier for those OS's? In a large shotp I expect this could be a support problem - if not a nightmare.
Please keep in mind these observations are not directly aimed at you WoodyZ - mainly at VMware for posting a useless compatibility matrix.
VMare sales and engineering need to get their act together - such problems have happened with increasing frequency. Give posts on the (dprecated 
) WS 10 Beta this release was definitely premature. Let's hope problems will be fixed in the next update to WS 10.
mfelker wrote: Please keep in mind these observations are not directly aimed at you WoodyZ - mainly at VMware for posting a useless compatibility matrix. .
Why would you even say anything like that since nothing about the Compatibility Guides or the WS10 Release Notes has anything whatsoever to do with me!
As far as "useless compatibility matrix" I personally do not find it useless and Windows 8.1 and Windows Server 2012 R2 were RTM on August 27, 2013 any that is probably why they're already included while the reason Ubuntu 13.10 is not is because it's still a beta release and the final release, and no RTM, is scheduled for October 17th, 2013 at which point there after it should then be added. This has been the normal and expected behavior and Users are supposed to read the Release Notes as well before using a product!