Just installed Kernel 3.15-rc5 on the test system, and the latest VMware (10.0.2) and NVIDIA (337.19) drivers install and run OK..
$ uname -a Linux rglinux 3.15.0-rc5 #1 SMP PREEMPT Fri May 9 22:58:39 BST 2014 x86_64 x86_64 x86_64 GNU/Linux
Summary of changes is here: http://lkml.iu.edu/hypermail/linux/kernel/1405.1/01308.html
This has been released earlier than originally planned, as Linus is ‘away’ for a week or so!
Robert Gadsdon. May 9, 2014.