I heard both version will be available here

heck i sold off my iphone4s when i bought it for around 1 month+ then only i discover the back case cannot be removed battery cannot change by ourself

and when i bought samsung, android is so easy to use u can put mp3, etc etc

only good with apple is the price drop slow and the casing is good other than that i think no reason to choose apple

non-removable battery phones are normally slimmer

Excellence in engineering without sacrificing functionality for aesthetics. 

Cool.. if end of april will be best

WIll first launch in which country r? Korea? WIll available KOrea mid april ka?

Octa core or Exynos better?

End of april is good cos i no money buy phone now lol..

i tot they say got 2 version.. which is the better version?

What do you mean by a phone with a good build quality? IMO, S3 and Note 2 have pretty good build quality. Drop it or not anything damaged you can just change the back cover, etc. It's not so easy to get damaged compared if you drop an aluminium/metal phone.. and S4 is using Gorilla Glass 3 while others that you mentioned are using CGG2 only. So how much more build quality you want? They are already giving you the best in the market.

and speaking of good build quality = iPhone 5? lulz. I'm sorry but the iPhone 5 is the most fragile iPhone to date and in my opinion i think they used cheap aluminium but charged at a high price. Just go into the Apple thread and go read about all the complaints on the iPhone 5's build issues.. Out of the box already got scuffs, easily prone to scuffs and scratches, rattling noise when you shake the iPhone, etc etc.

S2, S3 and Note 2 have pretty good build quality despite using plastics... Plastic doesn't mean it is fragile, no quality or low build quality.