According to the page that YOU linked to...
According to mining consensus rules. If less than 750 of the last 1000 blocks (75%) support a bigger block size, the maximum stays at 1MB.
After a block is encountered that triggers the 75% majority, a grace period of 2 weeks starts, during which the maximum stays at 1MB.
Lets take a look at how many of the last 1000 blocks have been in support of the bigger block size:
http://xtnodes.com/Hmm. As of January 7 2016 at 6am UTC, it looks like 0 of the last 1000 have been in support of the bigger block size. I'm pretty sure 0 is less than 750. Even if XT were to see the 750 threshold today, that would just trigger the 2 week grace period. I guess nothing will be "forking" any time soon.