I have the Logitech ultrathin keyboard case for my iPad 3rd gen and it works great - good strong magnets on the back spine for when the cover is closed over the iPad and strong magnets above the keys when the cover is open and the iPad is sitting in the slot so you can use the keyboard.
Because of the mixed reviews for the Logitech ultrathin case for the iPad air I decided to test one out at Best Buy before buying one on Amazon. The magnets on the spine are just as strong for the iPad air case and work great however when the cover is closed over the iPad, I noticed that the magnets on the opposite side which should hold the cover closed over the iPad are weak and maybe don't even exist, If the iPad is laying down flat with the cover closed it does turn off the iPad however; when I lift edit he ipad upright (portrait mode) with the cover closed I could see that the iPad woke up about half the time. This is a concern for me because I travel with my iPad and it is usually in an upright position in my backpack.
The other observation is that there appears to be magnets only on the left side of the keyboard just above the keys but nothing on their get side. The result is that when you lift the iPad up with the keyboard attached, the keyboard says in unless you put anyone reassure on the right side of the keyboard and then it falls off. Hopefully this is a known design problem and Logitech is going to fix this soon. The iPad Air does seem to fit snug enough on the keyboard when keying and when you touch this current it never fell over in landscape moe or in portrait mode. My load 3rd gen used to fall over when it was placed on the keyboard in portraying mode.
Because of these issues I am going to wait for awhile and hope that Logitech fixes these design issues,
I decide to buy the Logitech Ultrathin Keyboard for the iPad air after using my iPad air for 2 weeks without the keyboard. I really missed having one after I had used the original Ultrathin Keyboard for my iPad 3rd gen. I have been using this keyboard form a month and I have to say that I am glad I made the choice to buy the keyboard rather than wait for any updates to the product. I have discovered that the keyboard is more secure than I had originally thought. It supports my iPad Air in landscape and now in portrait mode without the iPad falling over. When I used to put my iPad 3rd gen into the original Ultrathin keyboard in portrait mode, it used to fall over frequently - I think this was due to the heaviness of the iPad 3rd gen - which is not an issue with the iPad Air.
I have no problems with the keyboard dropping when I pickup up my iPad (mounted in landscape mode) and carry the iPad with the keyboard attached. I was originally concerned that the keyboard might drop off because the magnet on the right side was not as strong as the magnet on the left of the keyboard - but this has not been an issue at all. I carry my iPad Air with the keyboard attached to it around my home and have not had the keyboard drop off once.
This keyboard does go sleep when you are not typing on it after some time (not sure what the time frame is - but this was also the case with the original keyboard). There is a short delay of probably 3 - 5 seconds when from the time you start typing until the words appear on the iPad screen if the keyboard has gone to sleep. The difference with this new Logitech Ultrathin Keyboard for the iPad Air is that it is better at displaying the words you have typed once it wakes up after several second - whereas with my older keyboard - anything I typed will the keyboard was waking up was lost and did not display. Don't know if this is an iOS 7 improvement or a logitech improvement - but I like it.
Because of these experiences, once I purchased the keyboard, I changed by rating from 3 stars that I gave the keyboard after I checked it out at a Best Buy store before I bought it - I now am comfortable giving the keyboard 5 stars after having owned it for a month. It is lightweight, easy to type on, accurate and matches my iPad Air exactly. The only limitation that still exists with this keyboard - which also existed on the older version, is that it does not autocorrect misspelled words like you experience when you type directly on the iPad's soft keyboard. I suspect this is more of an Apple iOS shortcoming than a Logitech keyboard limitation. I would definitely buy this keyboard again and recommend it to others.
I also have bought the padded InCase NeoPrene Sleeve for iPad Air Incase Neoprene Sleeve for iPad (Black)
- it is a perfect fit for keeping both my iPad Air and Logitech Ultrathin keyboard protected and safe while traveling.