It seems that with their latest platform upgrade, in order to keep your number you'll have to renew it each month. Until two days ago, it wasn't necessary to do so...
Anyway they unveiled - by putting them in their website country menu - the next countries which they're going to cover during the next months (officially, this time): Germany, Spain, Poland. Some of you could point out that this is a non-news, but I think that it is a news, as long as you consider that Truphone are back in business after months of... nothing