We just released DTrace 0.3.1. It's available on ULN (ol6_x86_64_Dtrace_BETA channel).
You can find the kernel, modues and libctf code on https://oss.oracle.com/projects/DTrace/ (see the Sources tab).
- Packaging changes:
+ Renamed kernel-uek RPM to kernel-uek-dtrace RPM;
+ New RPMs: libdtrace-ctf and libdtrace-ctf-devel: port of the Solaris libctf type-storage library, plus associated dev headers;
+ New RPM: dtrace-utils-devel: dev headers for dtrace-utils;
- New Features:
+ CTF support. Allows kernel types to be known in D scripts.
+ IO provider
+ Sched Provider
- Many bugfixes
See more details in the NEWS files or int he News section of the https://oss.oracle.com/projects/DTrace/ project area.