I've just gotten a new Mac Pro and was thinking about installing a fresh copy of the Yosemite Developer Preview on there as I'd like to use the new OS as soon as possible. I wanted to ask a question regarding upgrading down the line and if I'd be able to easily upgrade to the beta when it's out in July, and further down the line the public release later this fall. Will I be able to install these versions to replace my Yosemite version, or will I have to do a fresh install each and every time? Will going from Developer Preview to Beta to Public cause problems with the OS? For example, I've heard you should partition your drive and install 10.10 on a separate partition. What if I don't do this and install it as the primary OS? Is this bad? What are the pros, cons, etc. I usually use OS releases when they're publicly made available, so I'd appreciate any help with this. Thanks in advance!