For those of you that have asked about Rey Mysterio and his status with WWE, he has yet to sign a deal but there are still talks going on.
On Thursday's Wrestling Observer Live, Dave Meltzer said that a deal has not bee reached but talks are ongoing. If Mysterio returns then it would be more likely to be in the fall (around September) after he finishes his independent commitments.
Mysterio returned for a surprise appearance in January at the Royal Rumble and a second appearance at the Greatest Royal Rumble show in Saudi Arabia in April. These days, thanks to stem cell injections in his knee, he is moving around like he did over a decade ago and it caught management's attention.
Mysterio has said publicly that if he returns to WWE, he would want a part-time schedule so he can spend time with his family.