(But please, guys and gals, don't get TOO excited. This is what it is, and so far that's all it is, so don't make any assumptions).
HBO has just exercised its option, and purchased the television rights to A GAME OF THRONES.
For those of you who don't know Hollywood, an option gives a production company the right to buy a property (a book, a screenplay, whatever) at a certain agreed-upon price for a certain period of time (a year, six months, whatever). When that time runs out, they can let the option lapse, renew the option, or exercise the option and buy the property. The last is what HBO has just done.
What they have NOT done is greenlight the project. A GAME OF THRONES remains in development. They're still budgeting, still looking at locations (Spain and the Czech Republic at present, I hear). No decision has been reached, so any celebration would be premature. In Hollywood it is always best not to assume something is going to happen until it actually happens.
Even so... this is a very encouraging sign, and one that suggests a continued high level of enthusiasm and commitment for A GAME OF THRONES at HBO.
So keep your fingers crossed.