The decree was handed down Tuesday afternoon.
Mill, whose given name is Robert Rihmeek Williams, was sentenced in November to two to four years in prison for violating probation on a roughly decade-old gun and drug case.
Several high-profile people have spoken out on Mill's behalf against the sentence, calling it harsh and unnecessary.
Comedian Kevin Hart visited Mill in prison earlier in the day, decrying his multi-year prison sentence.
Earlier this month, Philadelphia District Attorney Larry Krasner visited Mill in prison and claimed the conviction should be tossed.
Mill issued the following statement regarding the release:
"I'd like to thank God, my family, my friends, my attorneys, my team at Roc Nation including JAY-Z, Desiree Perez, my good friend Michael Rubin, my fans, The Pennsylvania Supreme Court and all my public advocates for their love, support and encouragement during this difficult time. While the past five months have been a nightmare, the prayers, visits, calls, letters and rallies have helped me stay positive. To the Philadelphia District Attorney's office, I'm grateful for your commitment to justice - not only for my case, but for others that have been wrongfully jailed due to police misconduct. Although I'm blessed to have the resources to fight this unjust situation, I understand that many people of color across the country don't have that luxury and I plan to use my platform to shine a light on those issues. In the meantime, I plan to work closely with my legal team to overturn this unwarranted conviction and look forward to reuniting with my family and resuming my music career."
Mill's Lawyer said the following:
"We are thrilled that the Pennsylvania Supreme Court has directed Judge Brinkley to immediately issue an order releasing Meek on bail. As we have said all along, Meek was unjustly convicted and should not have spent a single day in jail. We are also pleased that the Pennsylvania Supreme Court has noted that Judge Brinkley may opt to remove herself from presiding over any further proceedings in Meek's case in the interests of justice. Meek is excited to be reunited with his family, and we, along with Meek, intend to continue to shine the light on a justice system in need of reform to prevent any other citizen from being put through what Meek has endured."