Calm down, Thembisa has not been replaced by her sister nor Jessica Nkosi.

Mzansi Magic has confirmed that Isibaya actress Jessica Nkosi and Anele Mdoda will be standing in for Thembisa Mdoda for the next OPW episodes as Thembisa takes a short break from filming.
Mzansi Magic confirmed the news on Tuesday afternoon.
Anele also confirmed the news on her Twitter account making it clear that she is simply standing in for her sister and not taking the job as the official host. 
The response from the public has been positive thus far, followers of Anele have expressed great excitement to seeing her on their television screens.
"Ever since we were young, we have always looked out for each other and this is no different. I am looking forward to this experience because I am a huge fan of the show," Said Anele in a statement.
According to the Mzansi Magic statement, Jessica Nkosi will be presenting OPW on 5 June and 12 June 2016. Whereas Anele Mdoda will be presenting on the 19th of June until 3 July.