After considering your feedback and reviewing the two proposals for changing combat, we’ve decided that a proficiency based system is the better of the two options. Not only will it be easier to understand, but it will allow players to focus in the areas of combat that they desire while limiting the impact equipment has on the outcome of combat. However, since we want to make sure to give you plenty of time to test the new system and provide feedback to help us tweak it before it goes live, Publish 40 will not include the proficiency system.

Another major reason for this decision is that there are some other additions and changes to UO that have already been completed (or are close to completion). Instead of making you wait for these cool improvements, we'd rather you had them as soon as possible. So what are these changes we’re talking about? Glad you asked! Here is a summary of what’s currently included in Publish 40 (keep in mind this list is subject to change and is not complete)...
More...