Windows 8.1 is expected to reach the RTM development stage sometime this month, while general availability is likely to be announced in the coming weeks.
While details on the RTM version are still vague right now, a new rumor spotted on MDL forums indicates that Microsoft might use this build to roll out some essential improvements, including an eagerly-awaited fix for the infamous blurry text bug spotted in both Windows 8 and 8.1.
At the same time, new goodies could be introduced for the Chinese versions of the operating system, but again, no details have been provided so far.
Select users are reportedly testing new builds of Windows 8.1 right now, with early feedback suggesting that Microsoft has made the operating system much more stable and bug-free. As always, take this with a pinch of salt until we hear something official from Microsoft.