Hulu, currently amid buyout rumors and offers, has updated their Android app to provide higher quality playback for Plus users on some devices. The new high-quality playback is available on Samsung's Galaxy S4, HTC's One, and HTC's Droid DNA.
According to Hulu's release notes, "You'll feel like you have bionic retina implants minus the deductible and waiting for its invention."
The higher quality playback is available for those devices that feature a 1080p display, hence the short list above. Another minor change included in this version is your standard bug fixes, specifically playback issues for certain LG phones and other devices. The updated app is available from the Google Play Store.