Shortly after unleashing (and quickly pulling back) the PS Vita's v1.65 firmware update, Sony's rapidly rolling out a followup release. Version 1.66 brings with it a few UI tweaks, including tidbits such as the addition of a progress bar during app installs, notification alerts now only popping up for three seconds, plus the option to tap Retry / Cancel when running into troubles during location search. Games like Unit 13 and Gravity Daze will also see "functional improvements," while the Near app is getting a direct link to the PlayStation Store, making it easier to grab apps that other folks are toying with.
Want the update? Go here for instructions.