YES it has just been released. 

Maybe if it was quiet enough or the children are under 10 and sensitive to loudspeakers. If they are 10 or older and it is windy or near a busy road you should get the Partybox 100, 110, Partybox 200, 300, 310, or the Boombox 2. The JBL On the Go Partybox may be a great option, as it is around the same price as the Xtreme 3 but it comes with a microphone, and is louder and bigger making it a convenient option as you have the ability to announce the names of teams or athletes with the microphone etc.

Yes, just make sure the charging port is closed at all times. This product is rated IPX67 which is different from IPX7. IP67 protects the product from submersion in 1 meter (3.3 feet) of water for up to 30 minutes, but it is also resistant to dust. Dust accumulation around electronics can lead to hardware failure so the IP67 rating is an extremely beneficial addition to this product.

I ended up leaving the Iphone hooked up all night to the speaker, them I turned the power off and back on several times while it was blutoothed to my Iphone and then it didnt have any problem this morning downloading the update, maybe turning my phone and apeaker off then back on several times made the difference.

Thank you for your question. The dimensions (W x H x D) are 298.5 x 136 x 134 mm / 11.75 x 5.35 x 5.28" Should you wish to receive further support, you may contact the Harman Customer Support team by telephone, email or chat in order to receive direct assistance. Please see https://uk.harmanaudio.com/support-contact.html#ns  for further details.  Thank you.

Although turned to 60 hertz, this speaker can play down to 44 htz. The main drivers react down to 36 or 35 Hertz, but it isn't audible because the box is not tuned to such low frequency. Such a small speaker rarely can audibly play notes lower than 35 htz because the size of the speaker is too small to move enough air for your ears to hear, as your ears are less sensitive to lower frequencies and the power required increases exponentially. If it was capable of playing music so deep, it may have trouble with battery life, driver endurance, passive radiator endurance, and trouble playing higher bass notes from 50-90 htz. No speaker on the market gets 20 hertz at this small size. Speakers that claim such sensitivity are not actually reproducing the sound and a test at those frequencies can prove it. I do not work for JBL.

It is out now is US and Europe

Thank you for your interest. Our JBL Xtreme 3 can be purchased directly from our website. Simply disregard the "personalize" option and proceed to checkout by clicking the "add to cart" button once you've decided on a color. If you need more help, place an order. Please reach out to our customer service for assistance.