What are key benefits of the OS replacement in Samsung Galaxy Gear(SM-V700)?

There are several user Benefits to the Tizen OS replacement in Samsung Galaxy Gear (SM-V700) including more available apps (140 now available), the ability to use the device as a standalone music player and to save files in MTP format, additional fitness features, and a customizable UX (font, home screen icons, wallpaper, etc).

NOTE :
1). Carrier specific apps will no longer work on the Galaxy Gear unless they develop a new version based on Tizen OS.
2) There are several apps that are not compatible with the Tizen OS upgrade currently, including Argus Mini Fitness Tracker, D-Day Notification, Evernote, KakaoTalk, LINE, Mini Gallery, miniSquare, Path, Pocket, QuickSpeedometer, QuickSpinthebottle, Qunar, RadiON, RunKeeper, SOS, TripIt – Travel Organizer, Tweet Quickview, and Zite.