The ports are part of a larger push to support ARM-based devices, including 3G-enabled devices & even smartphones, according to Xandros.
The 2 Xandros ports are based on the netbook-focused Freescale i.MX515 CPU & the Qualcomm Snapdragon CPU (first Linux support for this CPU). The ports will support both keyboard & touchscreen input.
Applications will include a browser (probably Firefox), instant messagin, email client, a photo viewer, a media player, & a office suite, just the applications you will find on the current Eee PC Xandros distro.
Here's a quote from the current press release regarding developper support.
"The Xandros solution for makers of ARM technology-based netbooks and other MIDs comes with tools to customize its functions and interface for specific markets and user demographics. It also includes a unique, custom brandable online Application Store for access to software, games, multimedia and web applications, enabling one-time and recurring revenue streams for OEMs, service providers and carriers."