Several pages have started showing up on the NetBeans Wiki that name NetBeans 6.8 as the next version number. Some of the pages to keep an eye on as the content is added include:

Editor Plans for NB 6.8 : http://wiki.netbeans.org/EditorPlan68

Some of the more interesting (and frustrating issues) that might be addressed include :
– Fix error badges and error underlining
– Support for Class-Path attribute in manifest (finally!)
– Optimize Imports
– Make the IDE usable during scanning (Scanning and Data Usage) – this issue has been hotly debated in a variety of bug reports from some frustrated users.
– Format code and fix imports on multiple files (code beautifier)

Database Plans for 6.8 : http://wiki.netbeans.org/DatabasePlan68

Some of the possible improvements for the database features include:
– Improved SQL code completion
– Embedded SQL code completion (probably a big maybe)

General performance plans : http://wiki.netbeans.org/NB68PerfPlan