Erm, no, though you might think so by this headline.. https://hackaday.com/2015/07/13/new-part-day-the-esp8266-killer
Read the comments – the $5 ESP8266 – where? $2 ESP8266 more like it – less, even - http://goo.gl/VB0V9K
There’s even a claim that this new single-source board (Seeed Studio) has MORE memory – well at least one variation of ESP12 has 4Mbytes – and the EMW… according to the ad, 512K.
And what about the all important Windows and Linux support libraries? Erm, no.
Another comment – Chinese documentation? Well I don’t know about you guys but I have raft of English documentation that until recently came with the Espressif SDK and which is now maintained online.
And the last – Chinese – guess where SEEED are!
Cheap, reliable, effective, more compatible variations of ESP and more suppliers than you can shake a stick at – and we want to move for what reason?
But – if you like spending money – there’s this – even more expensive - http://www.seeedstudio.com/depot/EMW3162-WiFi-Module-p-2122.html