As this is a rumour network:
Apparently a decision on the future of the project is very close to being reached (possibly within the next few weeks).
Future MPA has been forecast to 2035. MR2 until 2011/12 followed by MRA4 and MR2 until ??? followed by MMA. The MRA4 option is the cheapest (5.5bn) but more cash is needed earlier than the MMA option (6.5bn).
Of course, I only heard this via a rumour, so can anyone shed any light?