WordPress released its 2.8.1 Beta 1 after a week time of its 2.8 release. Most of the wordpress users fear to upgrade their 2.7 to 2.8 version because of plugin compatibility issues and theme related issues. In wordpress support forum some staffs have said to wait for 2.8.1 release that might give fix to these plugin issues. You might have read the 2.8 features and why wp users afraid of upgrading to it. The current 2.8.1 Beta 1 release have some reported bug fixes. You can read the detailed bug fix notes here.
The Bug fixes includes Dashboard high memory usage fix, Get categories() calling in themes, Deletion of files while upgrading to 2.8 version, and plugin explicit permission checks. These fixes are really sounds better. The team must come up with the stable release of 2.8.1 at the earliest to make the wordpress selfhosted users to feel happy.