Quite shocked that they've struck a multimillion dollar deal to keep support UNTIL JANUARY! Is there a reason they couldn't just move their upgrade cycle up 9 months? Obviously they knew this was coming.
They're also heavily regulated and if they can't show evidence that they've done all the required audit checks to ensure they're in line then the repercussions make millions look like chump change (think an investment bank being banned from trading on certain desks).
Depending on their priorities and at that size this might be the most economical move.