Hi,
With the release of RHEL 7 / CentOS 7, there has been some very major changes that have took place. Some of them are as follows:
1. Kernel: 3.10.0
2. Default JDK: OpenJDK-7.
3. Switched to systemd, firewalld and GRUB2
4. XFS as default file system
.. Many more
However, in webhosting industries, this has yet to be implemented successful as CentOS 6 was implemented in the early go due to the major changes and most of the webhosting control panel providers are still testing it.
CentOS 7, no doubt, comes with great features, but yet to accepted making my choice to be CentOS 6.6 at this moment.
I have upgrade CentOS 4 to 5 and 5 to 6, but yet to see how it goes with when it comes to upgrading it to 6 to 7.
Anyone tried it and having some details, please share..