We have received information that there will be NO such announcement tonight. Rumour debunked. Sorry guys :(.
A rumour we were made aware of last week has recently been reinforced by another independent source. According to our sources, Radio 1 will be announcing a Muse gig / event scheduled for the 12th September. The announcement is due to be made as part of Zane Lowe's show, this Tuesday (12th May).
As usual, add salt as required.