They stopped pushing out automatic upgrades, and announced the end of the free program. However no one seem to have told their media creation tool :-)
I believe you can use the tool for a clean install using a win 7 / 8.1 key - although I have not tried. You however can still perform an in situ upgrade. It keeps all apps and data intact, and saves the old windows folder in a windows.old folder (which you can use the disk cleanup tool to remove should you want the space back)
You may not be able to do a 32bit to 64bit upgrade though.
Yes certainly. I did it on my laptop last week and it was fine[1].
Go here:
Just in case anyone needs to do the same:
Go into disk management (right click on Computer / This PC, select Manage, then click Disk Management at the bottom of the tree view on the left).
Create a new simple partition of at least 400 MB, and give it a drive letter - say G:
Open a command prompt with admin privilege (search for CMD, the right click and choose "run as administrator")
To copy required info to the new reserved partition type:
bcdboot c:\windows /s g:
Now enter the disk partition tool:
diskpart
In the tool, select your new volume:
select volume g
Make it active:
active
Exit the tool:
exit
Go back to disk management, and remove the drive letter from the reserved partition.