We have finished the next release of MySQL Workbench 5.0 GA, 5.0.27. It features a number of bugs fixed, especially in the synchronization code, a huge improvement in terms of memory usage and an updated layer-pane, listing all objects on a diagram-canvas – now including conections too (this allows easy selection of hidden objects). Use the Update-function from the help menu or head over to the download pages to get your copy:

http://dev.mysql.com/downloads/workbench/5.0.html

Please let us know if bigger models now load faster and if you are seeing an improved performance of the canvas.