According to a source I just spoke with who is very close to the situation, there is little to no truth behind the rumor/reports that Psycho Sid Vicious will be heading to TNA.
Although TNA and Sid have spoken briefly, there have been no contracts signed at this point and Sid working for the company is nothing more than an idea/possibility right now.
In reality, the general feeling is that Sid wants to make a return to WWE, and that is where he truly wants to work at this point. However, WWE officials are not taking much of an interest in Sid right now, and little movement is being made on that front.
It therefore seems as if Psycho Sid Promotions ran the TNA logo with the statement about Sid coming to TNA either prematurely, or they were simply doing it to get people's attention and possibly send a message to WWE. So although we cannot completely rule out Sid heading to TNA, at this point there is no deal in place between the two sides.