The Samsung Galaxy S5 got slammed in reviews (including ours) for its plastic build quality and this is something which should be improved when it comes to the Galaxy S6. Rumours suggest the firm could be using graphene as a material.
Samsung is making Tizen products but it's almost certain that the Galaxy S6 will stick with Android. Google will launch Android L (full name and version number still to be confirmed) so we expect the handset to come with this version and Samsung's TouchWiz interface - probably a new version.
Under the bonnet we think the Galaxy S6 will be powered by one of Qualcomm's 64-bit processors (Android L will support 64-bit) which have already been announced and scheduled to arrive inside devices in the first half of 2015 - how convenient. Android L vs Android 4.4 KitKat comparison review: What's the difference?
The Snapdragon 808 and Snapdragon 810 are the two options here and Samsung could launch each in different markets. The former supports up to 1600 x 2560 displays and the latter allows for full 4K.
There's no word on the Galaxy S6 camera yet but we expect it to either be the same 16Mp resolution with some improvements or an even higher resolution, perhaps 20Mp.
Sign up for CIO Asia eNewsletters.