Justin Timberlake is set to team up with Jay Z, if reports are to be believed. A tweet appeared on Timberlake's official account today at 5am Irish time which said only "Thursday, January 10th, 2013 at 9.01am PST..."

According to reports from US radio, this signifies the time of release of a hush-hush new song from Timberlake, Jay Z and longtime J-Timb collaborater Timbaland.

Timberlake has long been an admirer of Jay Z and the two even came close to collaborating on Timberlake's 2006 record FutureSex/LoveSounds but scheduling conflicts meant that it didn't come to pass.

What exactly does the tweet mean? We'll found out later this afternoon at 5.01pm Irish time.