There is word that the Samsung Galaxy S6 has been spotted in a section of the Samsung website. There is also speculation that this will be the model number (SM-G890A) and has also been spotted on the import and export site Zauba.
This shows that the device will get a 5.5 inch screen, and will thus differ from the Galaxy S6 which has a 5.1 inch screen. However, this screen will also have a qHD resolution, as might be inferred from the UAP above.
Other specifications of the Galaxy S6 Active is that it will get a 5.5-inch screen say they will match quite close. So we should expect 3 GB of RAM to be present, 32 GB of storage, 16-megapixel camera and an Exynos 7420 processor. However, this unit will be somewhat thicker and more robust.
The announcement of the Galaxy S6 Active will probably happen in a month or two. The previous versions of the Active phones were also about two months after the introduction of the regular model introduced.
As for pricing regarding the Samsung Galaxy S6 this list below has all the details.