I can only comment from the Cargo side regarding rumours or as SLF on frequent overseas trips.
Cargo wise there has been for some time comments from EK that they are considering a 3rd daily flight from Manchester and subject to availability of aircraft it is very likely.
Also from what I hear bigger aircraft or increased frequency are not out of the question from QR or EY.
From the SLF point of view, I have flown recently with both EK and QR and with EK in particular it has been quite difficult to get Business Class seats on the Manchester flight. QR was not as difficult but Business was quite full.
Whilst the above is not definitive, in MUFC fan's defence his comments and that of cloud may have been 'wish list' but carry a vein of truth.
With regard to 1st class flights there may not be a demand from Manchester but despite many posts I from experience would say there is a demand for business class seats from Manchester.