How do I check if there are updated drivers for my device?

You can checkout the source at any place you like. Even your own home directory. Note that drivers are not updated if you stick to the same release versions (11.0-RELEASE-p1 -> 11.0-RELEASE-p2). Drivers can be updated with minor (11.0 -> 11.1) or major (10.3 -> 11.0) upgrades. And those updates are usually mentioned in the release notes.