It does not been seeing before; it will be using AT&T carrier, US based that has been indicated by latter A in its model number. Its profile if also known and you will be happy to know it has 1280 x 750 display; yet size is not known. It will also have ARM 11 CPU with an excellent speed of 2.3GHz processor and it will be the Qual com Snapdragon 800 or 801 might be upgraded. However 801 is supported by Galaxy S5 full size and android 4.3 jelly been.
Samsung has not given any assurance of any date for the launch of mini set which is as economical version of S5. It is in line with Samsungs past history. Samsung is likely to launch flagship Galaxy S series first of all and then will move towards launching other variant series following the release of their main flagship it may take weeks or months cannot be said with surety.
Previously Samsung launched Galaxy S4 first and Galaxy S4 mini followed. Similarly Galaxy S4 active, Galaxy S4 Zoom and then after wards galaxy mega.
Samsung good tag a price of 600 pounds without sim for S5 full size consumers may prefer a the mini over a 5 inch screen phone.