Fedora 13 introduces a new method of installing or upgrading Fedora over the Internet, using boot images available from http://boot.fedoraproject.org/. Images are available for a variety of media, including USB, CD and DVD, and floppy disk. You can use this image to start the boot process on a system, which then contacts a remote server to complete the boot process and launch the installer. The process is similar to booting on a network with a Preboot Execution Environment (PXE) server available.
The installation or upgrade process itself is the same as if you were performing the process with local media, such as a DVD.
There is nothing in the boot image that is specific to this version of Fedora; in future, you can use the same boot image to install or upgrade to subsequent versions of Fedora.
Selecting storage during installation
On systems with multiple storage devices (for example, more than one hard disk drive), the installation process for Fedora 13 differs from that of previous versions. Early in the installation process, anaconda asks you to select storage devices to use during installation. Devices that you do not select are excluded from the partitioning step that takes place later during installation.
Installing on multipath devices
Anaconda can now install Fedora on multipath devices. If you have multipath devices attached to your system, choose the Specialized Storage Devices option when anaconda offers it to you.
System Security Services Daemon
Fedora 13 can now take advantage of the System Security Services Daemon (SSSD) to enable high-performance, cached authentication and identity lookups, as well as support for offline authentication. Offline caching of identity data is supported for LDAP and FreeIPA servers, and offline authentication is supported for LDAP, Kerberos 5 and FreeIPA authentication servers.
To use this feature, choose the Use Network Login option when configuring a system with Firstboot. Firstboot runs automatically after installation completes and the system restarts.
These don't seem related but leaving here for followup