its the best update ever
my battery issues have been sorted out and I am getting amazing battery now
look and feel has changed. love the new color coded themes thou the colors at some places are hard to get used to but with time I will get used to them. mails + contacts look much better with new color themes.
blink feed has become better to use.
now you can set different fonts and also are downloadable freely from playstore
camera UI has changed and has become more easy to operate.
Generic changes
Wifi icon looks different
Widgets redesigned to match the new look
Lock screen reworked, you can swipe in 3 directions to get to “just unlock”, “unlock to regular home screen” or “unlock to blinkfeed”. Swiping up starting over home button unlocks directly to Google Now.
Auto Answer, just put phone up to your ear to answer. Actually works pretty well. Feels a bit odd though. You disable it under Settings > Call > Auto answer calls if you don’t want it
HTC Guide app, whichs helps you troubleshoot the phone and can help you to contact support etc.
HTC Power to give app is now default installed.
The Zoe app isn’t live yet, so we will have to wait.
Be aware of
Enable lock screen widgets under Settings > Security is OFF by default, so Enable it if you want to use lock screen widgets.
Panorama in camera is STILL there, things have just moved around.
Personalize Lock screen wallpaper, you can now set if you want your lock screen to use the same wallpaper as home screen or a custom one.
Theme, you can select 4 different themes that gives you a selection of colors. No customization on the themes yet. If you don’t like colors there’s a black/white (dark) theme.
Ringtones are new and different, since it’s a new main version of Sense. If you’ve used custom ringtones/etc then those will of course stay as they are.
Home screen, gives you a simple way of selecting the default launcher if you have more than just HTC Blinkfeed installed.
Security Screen lock, you can now set it to “None”. Which is a very welcomed change.
Setting to Enable lock screen widget is there, but by default OFF.
Display Font style, you can now choose a font style. There’s 3 there, and more you can download.
What you don’t get from M8
Since they don’t share the same hardware platform, there’s of course things from Sense 6 in M8 that you will not see in the Sense 6 update for M7.
Ufocus and any other hardware dependent feature, 360 panorama could be this as well. Since it’s not on the M7. You can use Google Camera if you want such a feature on your M7.
Motion Launch. Could be because M8 got more sensors than M7 and that it uses s801 instead of s600 in M7.
Boomsound, you have Beats Audio in M7 instead.
for all the changes, see this http://www.htc.com/us/go/sense-6-update/
and
http://droider.eu/2014/05/21/whats-new-in-the-sense-6-update-for-one-m7/