It seems that ASUS has started sending out press invites for an event on September 21 in Rome, Europe. Although the invite doesn't really reveal what to expect, many think the company is going to introduce its new ZenFone 4 lineup of smartphones.

Tipster Roland Quandt tweeted image about the launch, but for unknown reasons, he deleted the image soon after. Luckily, we have the image, which shows two smartphones placed in the shape of a 'V', and a tagline that reads, "take a walk on the wide side."