AP Samsung's Galaxy S6 will come in two variations, just as the Galaxy Note 4 did. Samsung is taking a different approach with its flagship mobile products in 2015, according to sources familiar with the company's plans.

Samsung will reveal two variations of its next flagship phone, the Galaxy S6, at the Mobile World Congress (MWC) show in March.

The first model will be made with metal, a departure from the all-plastic casings used in most Galaxy phones.

However, we're not sure whether it will be a unibody metal design like that of the iPhone or just have metal accents. A few weeks ago, an alleged metal frame for the Galaxy S6 leaked. It appears to be a unibody design.

The second model will have a curved screen like the one on the new Galaxy Note Edge that launched late last year.

On the Note Edge, the curved portion of the screen functions independently from the main display and is used to show stuff like notifications and live updates from certain apps.

Like this:

Business Insider The Galaxy Note Edge was the first Samsung phone with a curved screen. There will be a similar variation of the Galaxy S6. Samsung will also release a new smartwatch with a round screen at MWC, sort of like the Moto 360 smartwatch that got a lot of high praise for its design. This confirms an earlier report from SamMobile that Samsung plans to launch a round watch.

A Samsung representative declined to comment.

Business Insider/Lisa Eadicicco The Moto 360 smartwatch was praised for its design. Samsung is planning a similar device. Now for the caveat. We’re still several weeks away from MWC, and Samsung's plans aren't final. Things could change between now and March. In fact, we're told Samsung often changes things at the last minute. But Samsung's current plan is to announce two versions of the Galaxy S6 and a round smartwatch. Looking Back

Samsung has been experimenting with metal on its phones already. Last year, the company launched the Galaxy Alpha, which had a metal band around the edge. It looked a lot like the metal band that surrounded the iPhone 5S.

The company also launched two versions of the Galaxy Note 4, one with a curved screen and one without.

According to a source, those phones were released to test the market for curved screens and premium materials that could be used in the Galaxy S6.

Business Insider The Samsung Galaxy Alpha has a metal band around the edge.
Here's What We Don't Know

It's unclear when the Galaxy S6 will launch. Historically, Samsung has announced flagship products about a month before they go on sale. So April is a good guess.