According to the graphic, the demo will only be available from 08.10. - 10.10.2016. However, this statement does most likely refer to the testing phase of the new "Ultimate-Team-Mode" itself as each demo has been unlimitedly playable by now.
The following teams are going to be accessible:
- Arsenal London
- Leicester City
- Ajax Amsterdam
- Befica Lissabon
- AS Rom
- Paris Saint Germain
- Real Madrid
- Borussia Dortmund
- Juventus Turin
- FC Barcelona
In the course of EA's upcoming Play Event we might get to know more about whether the rumours are appropriate or not. Because the graphic's source is yet to be investigated.