This post show how to install Qt5 and QtCreator on Raspberry Pi 3 running Raspbian Jessie release 2016-03-18.
install qt5-default and qtcreator:
$ sudo apt-get install qt5-default
$ sudo apt-get install qtcreator
(Actually same as the steps to install on Raspberry Pi 2)
This video show installation remotely from Windows running PuTTY and Xming.
The MicroSD used is:
Kingston Micro SDHC 32GB Class 10/U1 (Up to 80MB/s Read)
(KINGSTON SDC10G2/32GB - 80MB/s)
Please also read Jakob Brunhart comments below.