Kickboxers trying their hand at MMA isn't a new thing and with Ewerton Teixeira, being from Brazil, it's not surprising that he would have some connections to the sport, as evidenced by training with Junior Dos Santos recently.
Teixeira will actually be making his MMA debut on August 4 in Salvador, Brazil at Dorea Fights, an event organized by Luis Dorea, the boxing coach of Junior Dos Santos. It's an interesting move for Teixeira, as he hasn't fought kickboxing at all since the last K-1 World Grand Prix at the end of 2010. He did fight in kyokushin karate last year though, but still has been very quiet for the past year and a half.
It's not known if Teixeira is going to come back to kickboxing, stick with MMA, or do both. GLORY did say earlier in the year that they were working on signing big names, and Teixeira was one of the names they mentioned. GLORY is holding a big heavyweight tournament this year and It's Showtime did sign a deal to do a show in Brazil in November, so there are some options if he were to come back to kickboxing.
Teixeira isn't the only Brazillian kickboxer that's talked about MMA recently. Anderson "Braddock" Silva has also talked about it. [source]