I have a UK TV, UE55H6700.
On the H6700, I noticed a massive picture improvement with the firmware update from 9th July 2113.4, but this broke Amazon Instant Video and caused "Playback issue" dialogues when playing anything from Amazon.
Firmware 2114 released July 22nd 2014, fixed Amazon Instant Video issue, and the picture quality is either slightly worse or the same as the previous firmware; can't make up my mind. Certainly 'dirty screen' on football matches when panning is massively reduced and the colours are not over saturated now. I also found from 2113.4, that Freeview SD was improved.
I'm using these settings until proper calibration:
MOVIE MODE
CLEAR
No MPEG Noise
backlight 9
contrast 94
brightness 47
colour 46
colour mode AUTO (borderline with 'Native'. Either is good but AUTO more natural sometimes).
Film Mode 2
Warm 2
Gamma 0 (borderline between -1 and 0)
Sharpness 25
and I get fantastic results on HD and even on SD. Out of the box settings, SD (including Freeview SD) looked terrible.
The only issues I have now are as follows:
1. Exiting 'Heart FM' app gives a black screen (app issue since its update). It also starts with 'Smooth FM' instead of Heart. An issue with the latest app update as of July 28th 2014.
2. Having two pages of apps in Smart hub, when trying to move the bottom right app on page 1 to page 2, it goes back to original view when you exit the smart hub and go back in. Definitely a coding issue. The camera app was in my bottom right of page 1 and it won't let me move it to page 2. It can do this randomly with any app you want to move from page 2 to page 1 or vice versa BUT ONLY if you have two pages of apps. Tried factory reset and smart hub reset and bug still remains.
3. The 'Trending' and 'Multimedia' pages of the smart hub never change content?
4. The 'Trailers' part of the Rakuten/Play on demand content in the Smart hub often link to incorrect trailer footage. App issue
5. The 'Now That's What I Call Music' app has links to music videos that are either wrong, or a code issue whereby the actual correct video is the menu option above the one that says it is. For example if Lady Gaga is description of menu option number 8, you have to select number 7. App Issue.
Missing Apps (UK) as of 22nd July 2014:
AMAZON CLOUD PLAYER
YAHOO
GOOGLE TALK
ANGRY BIRDS
GOOGLE CALENDAR
AP NEWS TICKER
RHAPSODY
ALL 3 MEDIA
FLIXSTER
MINISTRY OF SOUND