There are a few people on the forums touting that all reviews have skewed on the negative side. I have read through all the major reviews thus far and here is what I found.
Bloomberg (Joshua Topolsky)
Summary: Worlds best smartwatch, yet, not essential
+Good Looks
+Seamless, Simple U.I
+Great Activity App
-Raise Wrist Display Delay
-Glances seem clunky
-Digital Touch Weird
-Emojis gimmicky
Darring Fireball (John Gruber
Summary: Amazing fit & finish, better battery life then expected, taptic engine is a game changer. But you can't swim with it and raise wrist isn't perfect
+Fit & Finish
+Taptic Engine
+Battery Life
-Raise Wrist has bugs
-Can't swim with it
The Verge (Nilay Patel)
Summary: Best smartwatch on the market, but do I really need it? Was is it really for?
+Display
+Taptic Engine
+Activity App
+Great Watch Faces
+Apple Pay
-U.I is slow
-Device is Heavy
-Confusing Side Button
-Display Air Gap
-Raise Wrist Display Delay
-Notifications/Glances only accessed from watch face
-Notification Management
-Limited Siri functionality
-Heat Rate Sensor: Hit or Miss
-Price
The Wall Street Journal (Geoffrey Fowler)
Summary: Apple watch finally makes sense of smart-watches if you can tolerate its flaws
+Stylish
+Sensible
+Great Speakerphone
+Apple Pay
-A bit too thick
-Can't use in Shower
-Notifications Management
-Third Party Apps
Techpinions (Ben Bajarin)
Summary: The Apple watch is onto something but is not a necessity for most
+Notifications
+Taptic Engine
+User Interface
+Battery Life
+Force Touch
-Learning Curve
-Necessity
Re/Code (Lauren Goode)
Summary: Smartwatches are still unproven but the Apple Watch makes a strong case for them.
+Design
+Battery Life
+Apple Pay
+Call Quality
+Accurate Heart Rate Sensor
-Thick
-Limited Siri Capabilities
-Charging Cable
New York Times (Farhad Manjoo)
Summary: Bliss after a steep learning curve
+Smart Looks
+Apple Pay
+Taptic Engine
-Steep Learning Curve
-Taptic Engine
-Third Party Apps
CNET (Scott Stern)
Summary: Most ambitious, well constructed smart-watch, some first-generation problems.
+Beautiful Construction
+Compact Design
+Solid Fitness
+App Support
-Battery Life
-Price
-Slow at Times
-Confusing U.I
Yahoo (David Pogue)
Summary: Most beautiful smart-watch around, best user interface, but pricey and a few bugs
+Design
+Taptic Engine
+Well Designed U.I
+Battery Life
+Siri
-Price
-Raise Wrist Display not Perfect
-Learning Curve
-App Menu Too Small
-No Sleep Tracking
Most reviews are overall positive.
Most love the design, a few complaints about bulkiness. Most agree battery life is better then expected, some still don't like charging daily. User interface can be buggy (Apple promises fix before launch) and can have a steep learning curve. Notifications can be hellish for the popular kids, but for the average person shouldn't be a problem. Overall fitness tracking is great, some people reported inaccuracy in the Heart Rate Sensor. Taptic feedback is amazing, digital touch is a bit gimmicky and everyone loves Apple Pay!
Not a necessity, more of a luxury. It is the best smart-watch around.
Bloomberg (Joshua Topolsky)
Summary: Worlds best smartwatch, yet, not essential
+Good Looks
+Seamless, Simple U.I
+Great Activity App
-Raise Wrist Display Delay
-Glances seem clunky
-Digital Touch Weird
-Emojis gimmicky
Darring Fireball (John Gruber
Summary: Amazing fit & finish, better battery life then expected, taptic engine is a game changer. But you can't swim with it and raise wrist isn't perfect
+Fit & Finish
+Taptic Engine
+Battery Life
-Raise Wrist has bugs
-Can't swim with it
The Verge (Nilay Patel)
Summary: Best smartwatch on the market, but do I really need it? Was is it really for?
+Display
+Taptic Engine
+Activity App
+Great Watch Faces
+Apple Pay
-U.I is slow
-Device is Heavy
-Confusing Side Button
-Display Air Gap
-Raise Wrist Display Delay
-Notifications/Glances only accessed from watch face
-Notification Management
-Limited Siri functionality
-Heat Rate Sensor: Hit or Miss
-Price
The Wall Street Journal (Geoffrey Fowler)
Summary: Apple watch finally makes sense of smart-watches if you can tolerate its flaws
+Stylish
+Sensible
+Great Speakerphone
+Apple Pay
-A bit too thick
-Can't use in Shower
-Notifications Management
-Third Party Apps
Techpinions (Ben Bajarin)
Summary: The Apple watch is onto something but is not a necessity for most
+Notifications
+Taptic Engine
+User Interface
+Battery Life
+Force Touch
-Learning Curve
-Necessity
Re/Code (Lauren Goode)
Summary: Smartwatches are still unproven but the Apple Watch makes a strong case for them.
+Design
+Battery Life
+Apple Pay
+Call Quality
+Accurate Heart Rate Sensor
-Thick
-Limited Siri Capabilities
-Charging Cable
New York Times (Farhad Manjoo)
Summary: Bliss after a steep learning curve
+Smart Looks
+Apple Pay
+Taptic Engine
-Steep Learning Curve
-Taptic Engine
-Third Party Apps
CNET (Scott Stern)
Summary: Most ambitious, well constructed smart-watch, some first-generation problems.
+Beautiful Construction
+Compact Design
+Solid Fitness
+App Support
-Battery Life
-Price
-Slow at Times
-Confusing U.I
Yahoo (David Pogue)
Summary: Most beautiful smart-watch around, best user interface, but pricey and a few bugs
+Design
+Taptic Engine
+Well Designed U.I
+Battery Life
+Siri
-Price
-Raise Wrist Display not Perfect
-Learning Curve
-App Menu Too Small
-No Sleep Tracking
Most reviews are overall positive.
Most love the design, a few complaints about bulkiness. Most agree battery life is better then expected, some still don't like charging daily. User interface can be buggy (Apple promises fix before launch) and can have a steep learning curve. Notifications can be hellish for the popular kids, but for the average person shouldn't be a problem. Overall fitness tracking is great, some people reported inaccuracy in the Heart Rate Sensor. Taptic feedback is amazing, digital touch is a bit gimmicky and everyone loves Apple Pay!
Not a necessity, more of a luxury. It is the best smart-watch around.