From Reddit:
http://www.reddit.com/r/Bitcoin/comments/1yvdcd/heres_a_summary_of_what_has_happened_over_the/1.) MtGox allegedly lose 750,000 Bitcoins, according to an ALLEGED leaked document by MtGox, titled "Crisis Strategy Draft". TwoBitIdiot, who leaked the document, is a known person within the Bitcoin community.
2.) He then decides to leak the document to the public 1 - 2 hours later confirming this number, and within the document it says they are to rebrand as
http://gox.com and lie their way out of this mess.
3.) After the document is leaked to everyone, MtGox halts trades immediately (Around 5 minutes after the leak)
4.) At this point,
http://gox.com is still a parked domain, and not long after starts to redirect to
http://mtgox.com (EDIT: More information on the domain situation from chris45215, which basically confirms that MtGox were indeed planning to relaunch as Gox.com as explained in the leaked document. Further info on Domain Investing.)
5.) After around 30 minutes, Coinbase, Blockchain, Circle and Kraken simultaneously release identical articles titled "Joint Statement Regarding the Insolvency of Mt.Gox" (EDIT: Since then, some of the articles have removed the word "insolvency", but not all of them.)
6.) A further 5 minutes later,
http://mtgox.com is taken completely offline.
Then:
MtGox web page goes blank, with hidden hint MtGox may be being acquired. - source - comment in HTML of MtGox home page (a placeholder for an announcement about 'acq'). (This web page has since been superceded)
Hours later, MtGox web page carries a statement that "a decision was taken to close all transactions for the time being in order to protect the site and our users"
Karpeles tells Reuters ""We should have an official announcement ready soon-ish. We are currently at a turning point for the business. I can't tell much more for now as this also involves other parties."
Domain name Gox.com now registered to Karpeles/MtGox.
http://www.whois.com/whois/gox.com gox.com redirects to mtgox.com. (A third party could have registered this and set it up as a hoax but that seems vanishingly unlikely.)
The "Crisis Strategy Draft" report seems to be the sole source of rumours that 750k bitcoins are missing from MtGox. Also seems to be the source of a new supposed 'Gox' trademark. Rumours about ~750K bitcoins 'missing' from a MtGox cold wallet are confused, with some people assuming that 750K have gone in one go, others assuming that they have leaked away in small amounts over years, and others speculating that they have been destroyed/keys lost. If coins are 'missing', the figure might not be as high as 750k
Facebook page 'gox.com' launched, seems to be fake/troll with increasingly absurd comments about Dogecoin, etc. If the content were genuine, it would surely be on the mtgox.com and/or gox.com websites, not facebook.
IRC seems to carry comments from known(?) MtGox developers about losing their jobs.
MtGox still conspicuously fails to prove that it has Bitcoin assets by signing any in the blockchain, though this may be for commercial/securty reasons.