BlackBerry maker Research In Motion is close to rolling out its own music streaming service that will work across its mobile devices, according to sources.

Negotiations with major labels, including Vivendi SA’s Universal Music Group, Sony Corp’s Sony Music, Warner Music Group and EMI Group. The new service is expected to be announced by Labor Day in the US, Sept. 5.

RIM has been enhancing its BlackBerry Messenger offering, popularly known as BBM, since announcing its “social platform” at last September’s DefCon event where it unveiled the PlayBook tablet computer.

A RIM spokeswoman declined comment on the report but said BBM is one of the largest mobile social networks in the world.

RIM has just launched an updated operating system on three new touchscreen devices.