I thought I'd chime in on a couple of comment themes (I'm a developer in the application space on various platforms (many years), and I have an F6)
(Edit/Update:
http://www.knowyourmobile.com/andro...droid-44-kitkat-samsung-htc-lg-sony-motorolas)
That's about the 3rd article I've found in the last week on the subject.
June. That's when. June. F3, F6 and a number of others on the list, from multiple sources.
On the "what's the point" theme:
It's true that 4.1.2 is fine, but there may be a point in wanting the 4.4+ update: A build from the Linaro toolchain.
I can't verify this with 100% certainty on the LG F6, because it is within the power of any manufacturer to choose their toolchain when generating the OS for their device, but I don't believe the F6's 4.1.2 was compiled with Linaro, though it's possible they used the Snapdragon toolchain.
Performance on some devices improves anywhere between 15% to 100% (double), depending on the functions tested, when the OS is built with the Linaro toolchain, which Google has moved toward in 4.4, but not in 4.1.2. Snapdragon's toolchain has rapidly evolved, and I can't pin down what version was used when building the 4.1.2 we're currently using.
As an example of potential impact, the now ancient Kindle Fire 1st Gen was released with 2.3.3, and in stock usage still has that OS. However, there are several 4.4+ ROM's for the KF 1 gen compiled with Linaro, and the result is an ENTIRELY different device. You'd think, by comparing, the hardware had to be changed out.
You might think that's because of the jump from 2.3.3 to 4.x, but in reality 4.x is not much faster than 2.3.3 under most tests...certainly not by the factor witnessed when a highly optimized build is installed. If we build 2.3.3 for the KF 1 gen (not a popular goal, but I tried it) - the performance result is similar.
It's just a rumor, they're in business to sell phones, probably won't update the F6, it's an old device:
Every device over 2 months old is yesterday's product. Unless there's something wrong (design, feature or defect), most users don't upgrade every few months. Enthusiasts might, but the larger population of consumers keep a device for more than 6 months (many for 2 years).
The F6 was released September, 2013, unless my research is incorrect - making it 6 months old, not a year old as some posts have echoed.
There is some (rather small) merit to the theory that LG might not be motivated to upgrade the OS. There are virtually zero technical obstacles, and frankly it does seem short sighted because most consumers don't recognize an OS version change unless it's something like the infamous Windows 8/Vista/7. The general population may have heard terms like Kit Kat and Ice Cream Sandwich, but less than 2% could describe any recognizable difference or reason to want one over the other.
That probably makes everyone participating in this thread, even this forum, among the 2%.
They do recognize differences in screen size, price, brightness and weight, but many don't even bother choosing a device based on camera resolution or built in storage. The OS is probably the last reason most users would choose one device over another, unless it's something as obvious as iOS vs Android vs Windows 8.
In other words, I can't see how LG (or any firm guided by market data) would think that withholding an OS upgrade would have more than a 2% impact on new model sales. They know that certain cosmetic or hardware features have much greater impact on sales.
Ultimately, though, this is just a rumor. How many devices did LG release with 4.0x that were not upgraded to 4.1.x? (I have no idea, but it would be a better foundation upon which to predict their choice).