In this case, we didn't know what the nature of 'Blue' really is, is it more like V.Current SP1 ? or more like V.Next ? In fact, we had seen references to Blue AND "Windows 9", and we had heard that Blue is coming very soon, while "Windows 9" is completely mystery, so the common guess is, 'Blue' should be a minor update like V.Current SP1, which brings minor fixes and subtle new features, while "Windows 9" could be the real major update like 'V.Next', where big changes could happen.
Say what? Microsoft hasn't had a major change introduced with a service pack since Windows XP SP2. All SPs since then have been frankly pretty much no more substantial than a rollup of all prior updates.