To release details of this sort of (perfectly sensible) contingency planning at this particular moment looks a lot like an attempt to remind Greeks what the stakes are in the upcoming election (and thus scare them away from the far-left Syriza). It certainly won’t calm any nerves among Greek bank depositors though:

BRUSSELS (Reuters) – European finance officials have discussed as a worst-case scenario limiting the size of withdrawals from ATM machines, imposing border checks and introducing capital controls in at least Greece should Athens decide to leave the euro. EU officials have told Reuters the ideas are part of a range of contingency plans. They emphasized that the discussions were merely about being prepared for any eventuality rather than planning for something they expect to happen – no one Reuters has spoken to expects Greece to leave the single currency area.
Belgium’s finance minister, Steve Vanackere, said at the end of May that it was a basic function of each euro zone member state to be prepared for problems. These discussions appear to be in that vein. But with increased political uncertainty in Greece following the inconclusive election on May 6 and ahead of a second election on June 17, there is now an increased need to have contingencies in place, the EU sources said.
The discussions have taken place in conference calls over the past six weeks, as concerns have grown that a radical-left coalition, SYRIZA, may win the second election, increasing the risk that Greece could renege on its EU/IMF bailout and therefore move closer to abandoning the currency. No decisions have been taken on the calls, but members of the Eurogroup Working Group, which consists of euro zone deputy finance ministers and heads of treasury departments, have discussed the options in some detail, the sources said…
“The Bank of Greece is not aware of any such plans,” a central bank spokesman in Athens told Reuters when asked about the sources’ comments.
The vast majority of Greeks – some surveys have indicated 75 to 80 percent – like the euro and want to retain the currency, something Greek politicians are aware of and which may dissuade them from pushing the country too close to the brink.
However, SYRIZA is expected to win or come a strong second on June 17. Alexis Tsipras, the party’s 37-year-old leader, has said he plans to tear up or heavily renegotiate the 130-billion-euro bailout agreed with the EU and IMF. The EU and IMF have said they are not prepared to renegotiate.
If those differences cannot be resolved, the threat of the country leaving or being forced out of the euro will remain, and hence the need for contingencies to be in place…