WP10 (win10) preview version or will add rollback function!

Computer Store News: Although the Windows Phone 10 preview has not been pushed, the head of Microsoft Windows Insider, Gabriel Aul, has been busy on Twitter and patiently answered a wave of questions. In the answer just now, Aul hinted that if users had problems upgrading the WP10 preview, they could safely roll back to the previous system version:

We will share more details later, but If you have problems (in the upgrade), being able to roll back to the original version is a problem we value very much.

Although this feature has not been confirmed, it is a good thing for Microsoft to pay attention to the system rollback function, because the first preview version is bound to have some unpleasant bugs. If you add the rollback system option, it is a convenient way for users who can't stand the new system bug or miss the old version of the system.