Samsung’s Galaxy S4 was always going to be a big seller — probably the best-selling Android smartphone of 2013 — but the Korean company has lost $12 billion in market value due to concerns that the two Galaxy S4 variants that were recently announced will have a detrimental affect on its profit margins.

Brokers are also concerned that the growth prospects for Samsung smartphone business have “dimmed” following rumors of a new iPhone trade-in program from Apple.

Earlier this week, we heard that the Sony Xperia Z would be the latest device to get a “Google Edition” tag and begin shipping with a stock Android experience free from third-party tweaks, and now that rumor has been “confirmed” by a separate set of sources.

There was a time when the idea of seeing the likes of Samsung and HTC offering us “Google Edition” devices free from their own user interfaces seemed crazy. Now it’s almost becoming the norm for the latest flagships. It began with the Galaxy S4 at Google I/O last month, and then Android head Sundar Pinchai announced the HTC One Google Edition at D11 last week.

Now a rumor claims that we’ll get a Sony Xperia Z with stock Android next month.

A new software update rolling has just begun rolling out to the Samsung Galaxy S4. It doesn’t bring the much-anticipated Android 4.3 update, unfortunately, but it does offer some camera improvements including HDR video recording, and it increases the amount of internal storage available to users.

Another day, another new Samsung smartphone. This time it’s the much-anticipated Galaxy S4 Active, a ruggedized, waterproof version of the flagship Galaxy S4 that promises to be “the perfect companion for exploration, activity and adventure.”