There is no new dimension added in the minecraft 1.9 update. The only dimensions in the game are the overworld, the nether and the end. However, some pretty big changes were made to the end in 1.9.
Harry Craft was born on 1915-04-19.
Small Craft on a Milk Sea was created on 2010-10-19.
Harry Craft was born April 19, 1915, in Ellisville, MS, USA.
Absurd Sky in a Different Dimension - 2011 was released on: USA: 19 June 2011
Your Class or Mine ended on 2008-09-19.
Harry Craft debuted on September 19, 1937 and played his final game on July 14, 1942.
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We don't know, nobody knows. Look on the Mojang Blog to see updates for their stuff, like MCPE. Right now (Sept 19, 2015), a recent 0.12.1 update just came out.
Winx Club Enchantix - 2011 Beyond the Magic Dimension was released on: USA: 19 December 2011
According to NADA the 19' Smoker Craft Osprey weighs in at 1525 lbs w/ out the motor. Of course if you are asking for towing reasons you will need to know the weight of the trailer, motor and don't forget the fuel.
Pike River Mine disaster happened on 2010-11-19.