Free upgrade to Windows 10
will be available to Windows 7/8.1 users
Starting July 29th 2015

Free update No longer available after July 29th 2016

Use this trick to still get windows 10 upgrade windows 7/8 users

 The free upgrade offer for the general public has stopped
But Microsoft has introduced a loophole with this extension that lets anyone get Windows 10 for free.

Just download this EXE file from Microsoft's accessibility site
Then Windows 10 upgrade will commence without any checks.
Microsoft has not announced any end date for the upgrade extension.