Finally.!Installed the latest #lumia_cyan update.!!
Pros:
1. Action Center added.
2. More tiles can be added to the start screen.
3. Custom background can be set to the start screen. (This is one GOOD thing, windows has taken care of.!).
4. Custom alert tones for WhatsApp, Facebook, Hotmail, Google and Phone can be set.
5. Calendar has been updated.
6. Project my screen feature added.
7. An updated camera.
8. Many other small enhancements.
9. WhatsApp doesn't crash anymore when you scroll the previous messages.!!!! yayy.!!!
Cons:
1. The biggest disappointment I experienced was that, CORTANA has not been made available in the Lumia 520.!! Well yeah, this sucks. The same previous speech feature opens up when you long-press the search button.
2. Games are shown in the application list, as well as the in the Games section again. The list seems endless if you happen to have a lot of games.
Well, This was my experience in the first 30 minutes of using the phone, after the update.