A new custom client is in the works using C# and the XNA Libraries from Microsoft. What's that mean for you? A new custom client with an easier interface, and one that is more like the newer MMO Clients. It also means something that will not change every time you patch, because you control it. Not EA.
While it is still in VERY early development (just over a month and a half), it is already becoming a very quickly developed, stable client. First they plan on making it fully working and stable and then expand it from there in order to be more customizeable (key macros, customizing keystrokes, new features, etc). I encourage everyone to look into testing this client and providing feedback! It has a LOT of potential for freeshards in my opinion.
Nando, Turley, and myself are even looking over the code and helping with some bugfixes, packet info, etc for them also in order to help make this a stable custom client option for all freeshards (not just POL, or not just RunUO, etc). This is an open source client, so for those who want to customize things, guess what.... go for it! Not just the mul files will be customizable when using a custom Open Source client like this. You can alter the interface, change the way things are done, and pass your great ideas on to your users. This even means custom packets YOU design to use with custom packet scripts on your server to enhance the game. Good luck freaks, and have fun

http://code.google.com/p/ultimaxna/ - Homepage
#XNA on irc.runuo.com - Development Chat