Samsung's next flagship will be built from the ground up, with some impressive specs and features -- if recent rumors and leaks are to be believed.

The next Samsung flagship smartphone, right now referred to as the "Galaxy S6" by tech watchers, is slated to get a release date sometime in the first half of 2015.

And it looks like it's going to be a huge change from previous models.

Project Zero

First off, the codename for the Galaxy S6. According to SamMobile, Samsung is calling its next flagship in development "Project Zero," which Samsung watchers are taking as a bottom-up approach to creating a freshly-engineered smartphone. Previous codenames have all simply used letters, such as Project K for the GS5.

As part of the tantalizing code name, the possibility of a revamped exterior has made it into the rumor mill -- possibly featuring a thin unibody design with high-quality materials. But take that with a grain of salt, since "revolutionary" chassis have been predicted for pretty much every new, only slightly different-looking Samsung device.

Early Specs Leak?

In another, more recent, leak to SamMobile, several detailed specs of Project Zero have been disclosed. This includes an unsurprising Quad HD (2560 x 1440p) display, and a 5-megapixel front facing camera. No official word yet on the size of the display, but don't expect Samsung to venture too far away from the 5.1-inch screen size that the Galaxy S5 sports.

Other details include a possible 16-megapixel rear camera, which, depending on how development goes, could be upped to as much as 20-megapixels. No matter what, it seems Samsung is going to use its optical image stabilization sensor.

The leak also indicates that the Galaxy S6 will come with either an Exynos 7420 or a Qualcomm Snapdragon 810, depending on the market, both of which would officially enter Samsung's Galaxy S line into 64-bit processing era.

New Memory Tech = A Whole New Ballgame

The most interesting specs, according to a recent leak from Korean news website ITNews (via PhoneArena) is the storage on the purported new Galaxy S6. Internal storage options will probably be between 32GB, 64GB, and 128GB, which is not big news.

But the Korean source said the type of memory used in the Galaxy S6 might be entirely new, from a technical standpoint. Samsung is purportedly getting ready to produce USF (universal flash storage) 2.0 NAND Flash memory for the Galaxy S6.

This technology is capable of transfer speeds of up to 1.2GB/s -- three times faster than the current ubiquitous eMMC storage tech, and with purportedly half the power consumption. Talk about "ultra power saving" mode, indeed!

Basically, UFS 2.0 could make the GS6's storage akin to an ultra-mobile equivalent of high-quality SSD storage, which is used in expensive laptops, for example.

We don't see Samsung dropping its memory expansion card slots altogether (Samsung remains one of the last Android OEMs to offer microSD storage expansion, undoubtedly gaining a strong following from that fact alone).

But reports are that the company may start slowly replacing microSD cards with UFS tech. The Galaxy S6 might be the first model to do so, and if not, expect it by the time the Galaxy Note 5 releases.