A bit more on this here, including the cost to buy the 3 other used planes ($150 million), that pilots have been training in the UK since January, and that there will be three bases (one in the east, one in the west and one in the north). That last is a bit puzzling, since the article states...
Perhaps the Libs are planning a major procurement spree, as suggested by Richard Shimooka in this article:
Correct. 13 tons extra, in fact. Don't think it will be through the use of internal pods, however. Note that the "standard" MRTT already carries more fuel than the Pegasus.
According to Airbus, no reconfiguration is required, unless you want to set it up for medical or cargo. It's pretty flexible, so ultimately the best option for those countries with limited defence budgets. Kind of a Swiss army knife aircraft...
Being reported in Korea that Canada is looking at Korean submarines closely as an option to replace the Victorias. If true, quite interesting.