You may have noticed that we released a updated Raspbian software image yesterday. While the main reason for the new image was to provide support for the new Raspberry Pi 3 Model B+ , the image also includes, alongside the usual set of bug fixes and minor tweaks, one significant chunk of new functionality that is worth pointing out. Updating Raspbian on your Raspberry Pi How to update to the latest version of Raspbian on your Raspberry Pi.
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Raspbian update: supporting different screen sizes