Up to 500% speed boost for published maps

After months of work, we are pleased to announce that we’ve made significant improvements to our published map code, resulting in up to 500% performance boost, and a refreshed look-and-feel.
The functionality of published maps should remain the same, while things have changed under the hood. Since this is major code change, please review your published maps and let us know if you notice any problems.
Similar changes to maps with the admin interface are coming soon.