The launch dates of the Zenfone 5 last year may have led some to believe that the Zenfone 6 would be unveiled this week at MWC. This is unlikely to be the case, though, as a new advert has touted the Asus flagship to be launched in May instead.
https://www.notebookcheck.net/The-Asus-Zenfone-6-is-unlikely-to-be-revealed-at-MWC-billed-for-May-launch-instead.410753.0.html