iPhone 6, Galaxy S5
iPhone 6 vs Galaxy S5Screenshot from KDB Daewoo Sec

Samsung Galaxy S5 is yet to be released but its cases have hit online. Spigen cases of the flagship smartphone are available for pre-order on Amazon website.

Spigen cases are now opened for order but the stock will be available only 15 April 2014, hinting that the much-awaited device would hit the stores after more than a month of its launch.

The description of the cases also suggested that the next-generation smartphone will come in two variants - Galaxy S5 and Galaxy S5 Prime.

"[Non-Slip] Spigen Samsung Galaxy S5 Case Slim **NEW Release** [Ultra Fit] [Smooth Black] Premium Protection SF Coated Non-Slip Matte Hard Case for Galaxy S5 and Galaxy S5 Prime (2014) - ECO-Friendly Packaging - Smooth Black (SGP10731)," reads the description. 

Samsung Galaxy S5 is expected to be released on Monday at its Mobile World Congress (MWC) event in Barcelona. It had sent out press invite, titled "UNPACKED 5", giving a strong hint that the device would be released at the event.

South Korean's flagship smartphone is expected to have features like water and dust proof technology, Ultra Violet coating, multi-hovering technology and head-tracking gesture control, fingerprint sensor, 2.5Ghz Snapdragon805 (main) or 2.0Ghz Octa-core Exynos6 (64-bit), 5.2 or 5.25-inch AMOLED display, and several others. It is also expected to run on Android v4.4 KitKat OS and have TouchWiz UI.

The world's smartphone leader has not revealed specifications of its upcoming smartphone but the speculated features are expected to be seen when it is launched as was in the case of its predecessors.