Not good with links put search it up on google. You'll find the evidence very quickly.
For that polygon article, I took that to say "lead developer [at Re-Logic]", not that Cenx would be lead developer on the Wii U and 3DS versions.Cenx is lead dev confirmed http://www.polygon.com/2015/6/8/8748775/terraria-is-coming-out-on-wii-u-and-3ds
The rumors are certainly out there - and you can read into them what you will.
No official announcement has been made as of yet - and that would be 505's to share.
Sorry for the nebulous response, I'll just have to leave you with the ever-popular "stay tuned".